{"id":4432,"date":"2022-09-24T16:44:26","date_gmt":"2022-09-24T16:44:26","guid":{"rendered":"https:\/\/www.studyzonebd.com\/math\/?p=4432"},"modified":"2022-09-24T19:42:07","modified_gmt":"2022-09-24T19:42:07","slug":"class-7-chapter-3-lesson-3","status":"publish","type":"post","link":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-3-lesson-3\/","title":{"rendered":"\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983\u00a0\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"},"content":{"rendered":"\n<p>\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983&nbsp;\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mathematics\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Math <\/a>Book Solution | <a href=\"https:\/\/www.studyzonebd.com\/math\">Chapter <\/a>03 : Measurement<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983&nbsp;\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 : &nbsp;\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09aa\u09b0\u09bf\u09ae\u09be\u09aa, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09aa\u09b0\u09bf\u09ae\u09be\u09aa, \u09a4\u09b0\u09b2\u09aa\u09a6\u09be\u09b0\u09cd\u09a5\u09c7\u09b0 \u0986\u09af\u09bc\u09a4\u09a8 \u09aa\u09b0\u09bf\u09ae\u09be\u09aa<\/h4>\n\n\n\n<p>\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983&nbsp;\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/p>\n\n\n\n<h4 class=\"has-text-align-center has-vivid-red-color has-text-color wp-block-heading\"><span style=\"text-decoration: underline;\">\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09b0 \u0997\u09a3\u09bf\u09a4 \u09e9\u09df \u0985\u09a7\u09cd\u09af\u09be\u09df \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/span><\/h4>\n\n\n\n<p><strong>\u09e7<\/strong><strong>.&nbsp;<\/strong><strong>\u09e7<\/strong><strong>&nbsp;<\/strong><strong>\u09ac\u09b0\u09cd\u0997\u09ab\u09c1\u099f<\/strong><strong>=<\/strong><strong>\u0995\u09a4<\/strong><strong>&nbsp;<\/strong><strong>\u09ac\u09b0\u09cd\u0997<\/strong><strong>&nbsp;<\/strong><strong>\u09b8\u09c7\u09ae\u09bf<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09ed\u09e8\u09ef&nbsp;\u09ac\u09b0\u09cd\u0997&nbsp;\u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09ee\u09e8\u09ef&nbsp;\u09ac\u09b0\u09cd\u0997&nbsp;\u09b8\u09c7\u09ae\u09bf<br>(\u0996)&nbsp;\u09ef\u09e8\u09ef&nbsp;\u09ac\u09b0\u09cd\u0997&nbsp;\u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09ef\u09ef\u09e8&nbsp;\u09ac\u09b0\u09cd\u0997&nbsp;\u09b8\u09c7\u09ae\u09bf<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0997<a><\/a><\/p>\n\n\n\n<p><strong>\u09e8<\/strong><strong>.&nbsp;<\/strong><strong>\u098f\u0995\u099f\u09bf<\/strong><strong>&nbsp;<\/strong><strong>\u0998\u09a8\u0995\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u098f\u0995<\/strong><strong>&nbsp;<\/strong><strong>\u09a7\u09be\u09b0\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af<\/strong><strong>&nbsp;<\/strong><strong>\u09e9<\/strong><strong>&nbsp;<\/strong><strong>\u09ae\u09bf\u099f\u09be\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09b9\u09b2\u09c7<\/strong><strong>&nbsp;<\/strong><strong>\u09a4\u09b2\u0997\u09c1\u09b2\u09cb\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/strong><strong>&nbsp;<\/strong><strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09cb\u09a3\u099f\u09bf<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09eb\u09ea&nbsp;\u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09e7\u09ee&nbsp;\u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0<br>(\u0997)&nbsp;\u09ef&nbsp;\u09ac\u09b0\u09cd\u0997&nbsp;\u09ae\u09bf\u099f\u09be\u09b0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09ef&nbsp;\u09ae\u09bf\u099f\u09be\u09b0<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0995<\/p>\n\n\n\n<p><strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09a4\u09a5\u09cd\u09af\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0986\u09b2\u09cb\u0995\u09c7<\/strong><strong>&nbsp;<\/strong><strong>\u09e9<\/strong><strong>&nbsp;<\/strong><strong>\u0993<\/strong><strong>&nbsp;<\/strong><strong>\u09ea<\/strong><strong>&nbsp;<\/strong><strong>\u09a8\u0982<\/strong><strong>&nbsp;<\/strong><strong>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0989\u09a4\u09cd\u09a4\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09a6\u09be\u0993\u0983<\/strong><strong><\/strong><\/p>\n\n\n\n<p>\u098f\u0995\u099f\u09bf&nbsp;\u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0&nbsp;\u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0&nbsp;\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af&nbsp;\u09aa\u09cd\u09b0\u09b8\u09cd\u09a5\u09c7\u09b0&nbsp;\u09a4\u09bf\u09a8\u0997\u09c1\u09a3\u0964&nbsp;\u098f\u09b0&nbsp;\u099a\u09be\u09b0\u09a6\u09bf\u0995\u09c7&nbsp;\u098f\u0995\u09ac\u09be\u09b0&nbsp;\u09aa\u09cd\u09b0\u09a6\u0995\u09cd\u09b7\u09bf\u09a8&nbsp;\u0995\u09b0\u09b2\u09c7&nbsp;\u09b9\u09be\u0981\u099f\u09be&nbsp;\u09ea\u09e6\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0\u0964<\/p>\n\n\n\n<p><strong>\u09e9<\/strong><strong>.&nbsp;<\/strong><strong>\u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09a4<\/strong><strong>&nbsp;<\/strong><strong>\u09ae\u09bf\u099f\u09be\u09b0<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09eb\u09e6&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09e7\u09e6\u09e6<br>(\u0997)&nbsp;\u09e7\u09eb\u09e6&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09e8\u09e6\u09e6<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0997<\/p>\n\n\n\n<p><strong>\u09ea<\/strong><strong>.&nbsp;<\/strong><strong>\u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09a4<\/strong><strong>&nbsp;<\/strong><strong>\u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09ea\u09e6\u09e6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09e8\u09eb\u09e6\u09e6<br>(\u0997)&nbsp;\u09eb\u09e6\u09e6\u09e6&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09ed\u09eb\u09e6\u09e6<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0998<\/p>\n\n\n\n<p><strong>\u09eb<\/strong><strong>.&nbsp;<\/strong><strong>\u09b2\u09cd\u09af\u09be\u099f\u09bf\u09a8<\/strong><strong>&nbsp;<\/strong><strong>\u09ad\u09be\u09b7\u09be\u09af\u09bc<\/strong><strong>&nbsp;<\/strong><strong>\u09a1\u09c7\u09b8\u09bf<\/strong><strong>&nbsp;<\/strong><strong>\u0985\u09b0\u09cd\u09a5<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09c0<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09aa\u099e\u09cd\u099a\u09ae\u09be\u0982\u09b6&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09a6\u09b6\u09ae\u09be\u0982\u09b6<br>(\u0997)&nbsp;\u09b8\u09b9\u09b8\u09cd\u09b0\u09be\u0982\u09b6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09b6\u09a4\u09be\u0982\u09b6<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0996<\/p>\n\n\n\n<p><strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09a4\u09a5\u09cd\u09af\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0986\u09b2\u09cb\u0995\u09c7<\/strong><strong>&nbsp;<\/strong><strong>\u09ec<\/strong><strong>&nbsp;<\/strong><strong>\u0993<\/strong><strong>&nbsp;<\/strong><strong>\u09ed<\/strong><strong>&nbsp;<\/strong><strong>\u09a8\u0982<\/strong><strong>&nbsp;<\/strong><strong>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09c7\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0989\u09a4\u09cd\u09a4\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09a6\u09be\u0993\u0983<\/strong><strong><\/strong><\/p>\n\n\n\n<p>\u098f\u0995\u099f\u09bf&nbsp;\u099c\u09ae\u09bf\u09b0&nbsp;\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af&nbsp;\u09e8\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0&nbsp;\u098f\u09ac\u0982&nbsp;\u09aa\u09cd\u09b0\u09b8\u09cd\u09a5&nbsp;\u09e7\u09eb&nbsp;\u09ae\u09bf\u099f\u09be\u09b0\u0964<\/p>\n\n\n\n<p><strong>\u09ec<\/strong><strong>.&nbsp;<\/strong><strong>\u0990<\/strong><strong>&nbsp;<\/strong><strong>\u099c\u09ae\u09bf\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09a4<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09e9\u09eb&nbsp;\u09ae\u09bf\u099f\u09be\u09b0&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09ed\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0<br>(\u0996)&nbsp;\u09e7\u09ea\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09e9\u09e6\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0997<\/p>\n\n\n\n<p><strong>\u09ed<\/strong><strong>.&nbsp;<\/strong><strong>\u0990<\/strong><strong>&nbsp;<\/strong><strong>\u099c\u09ae\u09bf\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u09ad\u09bf\u09a4\u09b0\u09c7<\/strong><strong>&nbsp;<\/strong><strong>\u09e8<\/strong><strong>&nbsp;<\/strong><strong>\u09ae\u09bf\u099f\u09be\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u099a\u0993\u09a1\u09bc\u09be<\/strong><strong>&nbsp;<\/strong><strong>\u09b0\u09be\u09b8\u09cd\u09a4\u09be<\/strong><strong>&nbsp;<\/strong><strong>\u09a4\u09c8\u09b0\u09bf<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09b0\u09be<\/strong><strong>&nbsp;<\/strong><strong>\u09b9\u09b2\u0964<\/strong><strong>&nbsp;<\/strong><strong>\u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09ac\u09be\u09a6\u09c7<\/strong><strong>&nbsp;<\/strong><strong>\u099c\u09ae\u09bf\u09b0<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09a4<\/strong><strong>&nbsp;<\/strong><strong>\u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0<\/strong><strong>?<\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09ea\u09e6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09ed\u09e6<br>(\u0997)&nbsp;\u09e7\u09ed\u09ec&nbsp;&nbsp;&nbsp;&nbsp;(\u0998)&nbsp;\u09e8\u09e9\u09ea<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983&nbsp;\u0997<\/p>\n\n\n\n<p><strong>\u09ee<\/strong><strong>.&nbsp;<\/strong><strong>\u0995\u09bf\u09b2\u09cb\u09ae\u09bf\u099f\u09be\u09b0\u09c7<\/strong><strong>&nbsp;<\/strong><strong>\u09aa\u09cd\u09b0\u0995\u09be\u09b6<\/strong><strong>&nbsp;<\/strong><strong>\u0995\u09b0\u0983<\/strong><strong><\/strong><\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09ea\u09e6\u09e9\u09ef\u09e6&nbsp;\u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\u0996)&nbsp;\u09ed\u09eb&nbsp;\u09ae\u09bf\u099f\u09be\u09b0&nbsp;\u09e8\u09eb\u09e6&nbsp;\u09ae\u09bf\u09ae\u09bf<\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n<p>(\u0995)&nbsp;\u09ea\u09e6\u09e9\u09ef\u09e6&nbsp;\u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;<br>\u0986\u09ae\u09b0\u09be&nbsp;\u099c\u09be\u09a8\u09bf,<br>\u09e7\u09e6\u09e6&nbsp;\u09b8\u09c7\u09ae\u09bf=\u09e7&nbsp;\u09ae\u09bf\u099f\u09be\u09b0<br>\u2234\u09ea\u09e6\u09e9\u09ef\u09e6&nbsp;\u09b8\u09c7\u09ae\u09bf=\u09ea\u09e6\u09e9\u09ef\u09e6\/\u09e7\u09e6\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0=\u09ea\u09e6\u09e9.\u09ef&nbsp;\u09ae\u09bf\u099f\u09be\u09b0<br>\u0986\u09ac\u09be\u09b0,&nbsp;\u09e7\u09e6\u09e6\u09e6&nbsp;\u09ae\u09bf\u099f\u09be\u09b0&nbsp;=&nbsp;\u09e7&nbsp;\u0995\u09bf\u09b2\u09cb\u09ae\u09bf\u099f\u09be\u09b0<br>\u2234\u09ea\u09e6\u09e9.\u09ef&nbsp;\u09ae\u09bf\u099f\u09be\u09b0=\u09ea\u09e6\u09e9.\u09ef\/\u09e7\u09e6\u09e6\u09e6&nbsp;\u0995\u09bf\u09ae\u09bf=\u09e6.\u09ea\u09e6\u09e9\u09ef&nbsp;\u0995\u09bf\u09a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\u098f\u0995\u099f\u09bf \u09ae\u0997\u09c7\u09b0 \u09ad\u09bf\u09a4\u09b0\u09c7\u09b0 \u0986\u09af\u09bc\u09a4\u09a8 \u09e7\u09eb\u09e6\u09e6 \u0998\u09a8 \u09b8\u09c7\u09a8\u09cd\u099f\u09bf\u09ae\u09bf\u099f\u09be\u09b0 \u09b9\u09b2\u09c7, \u09e8\u09ed\u09e6 \u09b2\u09bf\u099f\u09be\u09b0\u09c7 \u0995\u09a4 \u09ae\u0997 \u09aa\u09be\u09a8\u09bf \u09b9\u09ac\u09c7?&nbsp;<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p>\u09e7\u09e6\u09e6\u09e6 \u0998\u09a8 \u09b8\u09c7\u09ae\u09bf = \u09e7 \u09b2\u09bf\u099f\u09be\u09b0<\/p>\n\n\n\n<p>\u2234 \u09e7\u09eb\u09e6\u09e6 \u0998\u09a8 \u09b8\u09c7\u09ae\u09bf = \u09e7.\u09eb \u09b2\u09bf\u099f\u09be\u09b0\u0964<\/p>\n\n\n\n<p>\u09e7.\u09eb \u09b2\u09bf\u099f\u09be\u09b0 \u09aa\u09be\u09a8\u09bf \u09a7\u09b0\u09c7 \u09e7\u099f\u09bf \u09ae\u0997\u09c7&nbsp;<\/p>\n\n\n\n<p>\u2234 \u09e7 \u09b2\u09bf\u099f\u09be\u09b0 \u09aa\u09be\u09a8\u09bf \u09a7\u09b0\u09c7 <sup>\u09e7<\/sup><em>\/<\/em><sub>\u09e7.\u09eb<\/sub> \u099f\u09bf \u09ae\u0997\u09c7\u0964<\/p>\n\n\n\n<p>\u2234 \u09e8\u09ed\u09e6 \u09b2\u09bf\u099f\u09be\u09b0 \u09aa\u09be\u09a8\u09bf \u09a7\u09b0\u09c7 <sup>(\u09e7x\u09e8\u09ed\u09e6x\u09e7\u09e6)<\/sup>\/<sub>\u09e7\u09eb<\/sub> \u099f\u09bf \u09ae\u0997\u09c7 = \u09e7\u09ee\u09e6\u099f\u09bf \u09ae\u0997\u09c7\u0964&nbsp;<\/p>\n\n\n\n<p>\u2234 \u09aa\u09be\u09a8\u09bf \u09b9\u09ac\u09c7 \u09e7\u09ee\u09e6 \u09ae\u0997\u0964&nbsp;<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u09e7\u09ee\u09e6 \u09ae\u0997\u0964<\/p>\n\n\n\n<p><strong>\u09e8\u09e7. \u098f\u0995 \u09ac\u09cd\u09af\u09ac\u09b8\u09be\u09af\u09bc\u09c0 \u0995\u09cb\u09a8\u09be\u09c7 \u098f\u0995\u09a6\u09bf\u09a8 \u09e7\u09ee \u0995\u09c7\u099c\u09bf \u09e9\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae \u099a\u09be\u09b2 \u098f\u09ac\u0982 \u09eb \u0995\u09c7\u099c\u09bf \u09ed\u09eb\u09e6 \u0997\u09cd\u09b0\u09be\u09ae \u09b2\u09ac\u09a3 \u09ac\u09bf\u0995\u09cd\u09b0\u09af\u09bc \u0995\u09b0\u09c7\u09a8\u0964 \u098f \u09b9\u09bf\u09b8\u09be\u09ac\u09c7 \u09ae\u09be\u09b8\u09c7 \u09a4\u09bf\u09a8\u09bf \u0995\u09c0 \u09aa\u09b0\u09bf\u09ae\u09be\u09a3 \u099a\u09be\u09b2 \u0993 \u09b2\u09ac\u09a3\u0964 \u09ac\u09bf\u0995\u09cd\u09b0\u09af\u09bc \u0995\u09b0\u09c7\u09a8?&nbsp;<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p>\u09e7 \u09ae\u09be\u09b8=\u09e9\u09e6 \u09a6\u09bf\u09a8\u0964 <\/p>\n\n\n\n<p>\u09e7 \u09a6\u09bf\u09a8\u09c7 \u099a\u09be\u09b2 \u09ac\u09bf\u0995\u09cd\u09b0\u09af\u09bc \u0995\u09b0\u09c7\u09a8 = \u09e7\u09ee \u0995\u09c7\u099c\u09bf \u09e9\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae <\/p>\n\n\n\n<p>\u2234 \u09e9\u09e6 \u09a6\u09bf\u09a8\u09c7 \u099a\u09be\u09b2 \u09ac\u09bf\u0995\u09cd\u09b0\u09bf \u0995\u09b0\u09c7\u09a8 = (\u09e7\u09ee \u0995\u09c7\u099c\u09bf \u09e9\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae)X\u09e9\u09e6 <\/p>\n\n\n\n<p>\u098f\u0996\u09be\u09a8\u09c7, <\/p>\n\n\n\n<p>(\u09e7\u09ee \u0995\u09c7\u099c\u09bf \u09e9\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae)X\u09e9\u09e6 <\/p>\n\n\n\n<p>=(\u09e7\u09eeX\u09e9\u09e6) \u0995\u09c7\u099c\u09bf+(\u09e9\u09e6\u09e6X\u09e9\u09e6) \u0997\u09cd\u09b0\u09be\u09ae <\/p>\n\n\n\n<p>=\u09eb\u09ea\u09e6 \u0995\u09c7\u099c\u09bf+\u09ef\u09e6\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae\u0964 <\/p>\n\n\n\n<p>=\u09eb\u09ea\u09e6 \u0995\u09c7\u099c\u09bf+\u09ef \u0995\u09c7\u099c\u09bf\u0964 <\/p>\n\n\n\n<p>=\u09eb\u09ea\u09ef \u0995\u09c7\u099c\u09bf <\/p>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0, <\/p>\n\n\n\n<p>\u09e7 \u09a6\u09bf\u09a8\u09c7 \u09b2\u09ac\u09a3 \u09ac\u09bf\u0995\u09cd\u09b0\u09af\u09bc \u0995\u09b0\u09c7\u09a8 \u09eb \u0995\u09c7\u099c\u09bf \u09ed\u09eb\u09e6 \u0997\u09cd\u09b0\u09be\u09ae <\/p>\n\n\n\n<p>\u2234\u09e9\u09e6 \u09a6\u09bf\u09a8\u09c7 \u09b2\u09ac\u09a3 \u09ac\u09bf\u0995\u09cd\u09b0\u09af\u09bc \u0995\u09b0\u09c7\u09a8 (\u09eb \u0995\u09c7\u099c\u09bf \u09ed\u09eb\u09e6 \u0997\u09cd\u09b0\u09be\u09ae)X\u09e9\u09e6&nbsp;<\/p>\n\n\n\n<p>\u098f\u0996\u09a8,<\/p>\n\n\n\n<p>(\u09eb \u0995\u09c7\u099c\u09bf \u09ed\u09eb\u09e6 \u0997\u09cd\u09b0\u09be\u09ae)X\u09e9\u09e6&nbsp;<\/p>\n\n\n\n<p>=(\u09ebx\u09e9\u09e6) \u0995\u09c7\u099c\u09bf+(\u09ed\u09eb\u09e6X\u09e9\u09e6) \u0997\u09cd\u09b0\u09be\u09ae <\/p>\n\n\n\n<p>=\u09e7\u09eb\u09e6 \u0995\u09c7\u099c\u09bf+\u09e8\u09e8\u09eb\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae&nbsp;<\/p>\n\n\n\n<p>=\u09e7\u09eb\u09e6 \u0995\u09c7\u099c\u09bf+\u09e8\u09e8 \u0995\u09c7\u099c\u09bf+\u09eb\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae\u0964 <\/p>\n\n\n\n<p>= \u09e7\u09ed\u09e8 \u0995\u09c7\u099c\u09bf \u09eb\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae\u0964&nbsp;<\/p>\n\n\n\n<p>\u2234 \u09a4\u09bf\u09a8\u09bf \u09ae\u09be\u09b8\u09c7 \u09eb\u09ea\u09ef \u0995\u09c7\u099c\u09bf \u099a\u09be\u09b2 \u0993 \u09e7\u09ed\u09e8 \u0995\u09c7\u099c\u09bf \u09eb\u09e6\u09e6 \u0997\u09cd\u09b0\u09be\u09ae \u09b2\u09ac\u09a3 \u09ac\u09bf\u0995\u09cd\u09b0\u09bf \u0995\u09b0\u09c7\u09a8\u0964<\/p>\n\n\n\n<p><strong>\u09e8\u09e8. \u0995\u09cb\u09a8\u09cb \u09aa\u09b0\u09bf\u09ac\u09be\u09b0\u09c7 \u09a6\u09c8\u09a8\u09bf\u0995 \u09e7.\u09e8\u09eb \u09b2\u09bf\u099f\u09be\u09b0 \u09a6\u09c1\u09a7 \u09b2\u09be\u0997\u09c7\u0964 \u09aa\u09cd\u09b0\u09a4\u09bf \u09b2\u09bf\u099f\u09be\u09b0 \u09a6\u09c1\u09a7\u09c7\u09b0 \u09a6\u09be\u09ae \u09eb\u09e8 \u099f\u09be\u0995\u09be \u09b9\u09b2\u09c7, \u0990 \u09aa\u09b0\u09bf\u09ac\u09be\u09b0\u09c7 \u09e9\u09e6 \u09a6\u09bf\u09a8\u09c7 \u0995\u09a4 \u099f\u09be\u0995\u09be\u09b0 \u09a6\u09c1\u09a7 \u09b2\u09be\u0997\u09ac\u09c7?<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p>\u09e7 \u09a6\u09bf\u09a8\u09c7 \u09a6\u09c1\u09a7 \u09b2\u09be\u0997\u09c7 \u09e7.\u09e8\u09eb \u09b2\u09bf\u099f\u09be\u09b0 <\/p>\n\n\n\n<p>\u2234\u09e9\u09e6 \u09a6\u09bf\u09a8\u09c7 \u09a6\u09c1\u09a7 \u09b2\u09be\u0997\u09c7 \u09e7.\u09e8\u09ebX\u09e9\u09e6 \u09b2\u09bf\u099f\u09be\u09b0 = \u09e9\u09ed.\u09eb \u09b2\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0, <\/p>\n\n\n\n<p>\u09e7 \u09b2\u09bf\u099f\u09be\u09b0 \u09a6\u09c1\u09a7\u09c7\u09b0 \u09a6\u09be\u09ae \u09eb\u09e8 \u099f\u09be\u0995\u09be&nbsp;<\/p>\n\n\n\n<p>\u2234 \u09e9\u09ed.\u09eb \u09b2\u09bf\u099f\u09be\u09b0 \u09a6\u09c1\u09a7\u09c7\u09b0 \u09a6\u09be\u09ae (\u09eb\u09e8X\u09e9\u09ed.\u09eb) \u099f\u09be\u0995\u09be = \u09e7\u09ef\u09eb\u09e6 \u099f\u09be\u0995\u09be\u0964 <\/p>\n\n\n\n<p>\u2234 \u0990 \u09aa\u09b0\u09bf\u09ac\u09be\u09b0\u09c7 \u09a6\u09c1\u09a7 \u09b2\u09be\u0997\u09ac\u09c7 \u09e7\u09ef\u09eb\u09e6 \u099f\u09be\u0995\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u09e8\u09e9, \u098f\u0995\u099f\u09bf \u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u0993 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 \u09ec\u09e6 \u09ae\u09bf\u099f\u09be\u09b0, \u09ea\u09e6 \u09ae\u09bf\u099f\u09be\u09b0\u0964 \u098f\u09b0 \u09ad\u09bf\u09a4\u09b0\u09c7 \u099a\u09a4\u09c1\u09b0\u09cd\u09a6\u09bf\u0995\u09c7 \u09e8 \u09ae\u09bf\u099f\u09be\u09b0 \u099a\u0993\u09a1\u09bc\u09be \u09b0\u09be\u09b8\u09cd\u09a4\u09be \u0986\u099b\u09c7\u0964 \u09b0\u09be\u09b8\u09cd\u09a4\u09be\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964&nbsp;<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p>\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7, \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09ec\u09e6 \u09ae\u09bf\u099f\u09be\u09b0 \u0993 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 \u09ea\u09e6 \u09ae\u09bf\u099f\u09be\u09b0 <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af ={\u09ec\u09e6-(\u09e8x\u09e8)} \u09ae\u09bf\u099f\u09be\u09b0=\u09eb\u09ec \u09ae\u09bf\u099f\u09be\u09b0 <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5={\u09ea\u09e6-(\u09e8x\u09e8)} \u09ae\u09bf\u099f\u09be\u09b0=\u09e9\u09ec \u09ae\u09bf\u099f\u09be\u09b0\u0964 <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09b8\u09b9 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = (\u09ec\u09e6x\u09ea\u09e6) \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0 = \u09e8\u09ea\u09e6\u09e6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u0964 <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = (\u09eb\u09ecX\u09e9\u09ec) \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0 = \u09e8\u09e6\u09e7\u09ec \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0&nbsp;<\/p>\n\n\n\n<p>\u2234 \u09b0\u09be\u09b8\u09cd\u09a4\u09be\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = (\u09e8\u09ea\u09e6\u09e6-\u09e8\u09e6\u09e7\u09ec) \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0 = \u09e9\u09ee\u09ea \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u09e8\u09ea, \u098f\u0995\u099f\u09bf \u0998\u09b0\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5\u09c7\u09b0 \u09e9 \u0997\u09c1\u09a3\u0964 \u09aa\u09cd\u09b0\u09a4\u09bf \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0 \u09ed.\u09eb\u09e6 \u099f\u09be\u0995\u09be \u09a6\u09b0\u09c7 \u0998\u09b0\u09c7\u09b0 \u09ae\u09c7\u099d\u09c7 \u0995\u09be\u09b0\u09cd\u09aa\u09c7\u099f \u09a6\u09bf\u09af\u09bc\u09c7 \u09ae\u09c1\u09a1\u09bc\u09a4\u09c7 \u09ae\u09be\u09c7\u099f \u09e7\u09e7\u09e6\u09e8.\u09eb\u09e6 \u099f\u09be\u0995\u09be \u09ac\u09cd\u09af\u09af\u09bc \u09b9\u09af\u09bc\u0964 \u0998\u09b0\u099f\u09bf\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u0993 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964&nbsp;<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p>\u09ed.\u09eb\u09e6 \u099f\u09be\u0995\u09be \u09ac\u09cd\u09af\u09af\u09bc \u09b9\u09af\u09bc \u09e7 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u09c7 <\/p>\n\n\n\n<p>\u2234\u09e7 \u099f\u09be\u0995\u09be \u09ac\u09cd\u09af\u09af\u09bc \u09b9\u09af\u09bc <sup>\u09e7<\/sup>\/<sub>\u09ed.\u09eb\u09e6<\/sub> \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u09c7 <\/p>\n\n\n\n<p>\u2234 \u09e7\u09e7\u09e6\u09e8.\u09eb\u09e6 \u099f\u09be\u0995\u09be \u09ac\u09cd\u09af\u09af\u09bc \u09b9\u09af\u09bc <sup>(\u09e7X\u09e7\u09e7\u09e6\u09e8.\u09eb\u09e6)<\/sup>\/<sub>\u09ed.\u09eb\u09e6<\/sub> \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u09c7 = \u09e7\u09ea\u09ed \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p>\u0998\u09b0\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = \u09e7\u09ea\u09ed \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0 <\/p>\n\n\n\n<p>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u0998\u09b0\u099f\u09bf\u09b0 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 \u0995 \u09ae\u09bf\u099f\u09be\u09b0 <\/p>\n\n\n\n<p>\u09a4\u09be\u09b9\u09b2\u09c7, \u0998\u09b0\u099f\u09bf\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09e9X\u0995 \u09ae\u09bf\u099f\u09be\u09b0 = \u09e9\u0995 \u09ae\u09bf\u099f\u09be\u09b0\u0964<\/p>\n\n\n\n<p>\u2234 \u0998\u09b0\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = \u09e9\u0995X\u0995 = \u09e9\u0995<sup>\u09e8<\/sup> <\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09ae\u09a4\u09c7, \u09e9\u0995<sup>\u09e8<\/sup> = \u09e7\u09ea\u09ed <\/p>\n\n\n\n<p>\u09ac\u09be, \u0995<sup>\u09e8<\/sup> = <sup>\u09e7\u09ea\u09ed<\/sup>\/<sub>\u09e9<\/sub> <\/p>\n\n\n\n<p>\u09ac\u09be, \u0995<sup>\u09e8<\/sup> = \u09ea\u09ef <\/p>\n\n\n\n<p>\u09ac\u09be, \u0995 = \u221a\u09ea\u09ef <\/p>\n\n\n\n<p>\u09ac\u09be, \u0995=\u09ed <\/p>\n\n\n\n<p>\u09b8\u09c1\u09a4\u09b0\u09be\u0982, \u0998\u09b0\u099f\u09bf\u09b0 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5=\u09ed \u09ae\u09bf\u099f\u09be\u09b0 \u098f\u09ac\u0982 <\/p>\n\n\n\n<p>\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af= \u09e9X\u09ed \u09ac\u09be \u09e8\u09e7 \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u09e8\u09eb, \u098f\u0995\u099f\u09bf \u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09eb\u09e6 \u09ae\u09bf \u098f\u09ac\u0982 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 \u09e9\u09e6 \u09ae\u09bf\u099f\u09be\u09b0 \u098f\u09ac\u0982 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09ad\u09bf\u09a4\u09b0\u09c7\u09b0 \u099a\u09be\u09b0\u09bf\u09a6\u09bf\u0995\u09c7 \u09e9 \u09ae\u09bf\u099f\u09be\u09b0 \u099a\u0993\u09a1\u09bc\u09be \u09b0\u09be\u09b8\u09cd\u09a4\u09be \u0986\u099b\u09c7\u0964 <\/strong><\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">\u0995) \u0989\u09aa\u09b0\u09c7\u09b0 \u09a4\u09a5\u09cd\u09af\u09c7\u09b0 \u0986\u09b2\u09be\u09c7\u0995\u09c7 \u0986\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8 \u0995\u09b0\u0964 <\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">\u0996) \u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964 <\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">\u0997) \u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be\u09af\u09bc \u09ac\u09c7\u09a1\u09bc\u09be \u09a6\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf\u09ae\u09bf\u099f\u09be\u09b0\u09c7 \u09e8\u09eb \u099f\u09be\u0995\u09be \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u09ae\u09be\u09c7\u099f \u0995\u09a4 \u0996\u09b0\u099a \u09b9\u09ac\u09c7?&nbsp;<\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983&nbsp;<\/p>\n\n\n\n<p><strong>\u0995)<\/strong> \u0986\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u099a\u09bf\u09a4\u09cd\u09b0\u0983&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3.jpg\" alt=\"\" class=\"wp-image-4449\" width=\"451\" height=\"233\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3.jpg 743w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-300x155.jpg 300w\" sizes=\"(max-width: 451px) 100vw, 451px\" \/><\/figure>\n\n\n\n<p><strong>\u0996)&nbsp;<\/strong><\/p>\n\n\n\n<p>\u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09eb\u09e6 \u09ae\u09bf \u0993 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 \u09e9\u09e6 \u09ae\u09bf <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af = {\u09eb\u09e6-(\u09e9X\u09e9)} \u09ae\u09bf = \u09ea\u09e7 \u09ae\u09bf <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 = {\u09e9\u09e6-(\u09e9X\u09e9)} \u09ae\u09bf = \u09e8\u09e7 \u09ae\u09bf <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09b8\u09b9 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = \u09eb\u09e6X\u09e9\u09e6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf= \u09e7\u09eb\u09e6\u09e6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = \u09ea\u09e7x\u09e8\u09e7 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf = \u09ee\u09ec\u09e7 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf <\/p>\n\n\n\n<p>\u2234\u09b0\u09be\u09b8\u09cd\u09a4\u09be\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = (\u09e7\u09eb\u09e6\u09e6-\u09ee\u09ec\u09e7) \u09ac\u09be \u09ec\u09e9\u09ef \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u0997)<\/strong> <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af=\u09ea\u09e7 \u09ae\u09bf <\/p>\n\n\n\n<p>\u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5 = \u09e8\u09e7 \u09ae\u09bf\u0964 <\/p>\n\n\n\n<p>\u2234 \u09b0\u09be\u09b8\u09cd\u09a4\u09be \u09ac\u09be\u09a6\u09c7 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be = \u09e8(\u09ea\u09e7+\u09e8\u09e7) \u09ae\u09bf = \u09e7\u09e8\u09ea \u09ae\u09bf&nbsp;<\/p>\n\n\n\n<p>\u098f\u0996\u09a8, <\/p>\n\n\n\n<p>\u09ac\u09c7\u09a1\u09bc\u09be \u09a6\u09bf\u09a4\u09c7 \u09e7 \u09ae\u09bf\u099f\u09be\u09b0\u09c7 \u0996\u09b0\u099a \u09b9\u09af\u09bc \u09e8\u09eb \u099f\u09be\u0995\u09be\u0964 <\/p>\n\n\n\n<p>\u2234 \u09ac\u09c7\u09a1\u09bc\u09be \u09a6\u09bf\u09a4\u09c7 \u09e7\u09e8\u09ea \u09ae\u09bf\u099f\u09be\u09b0\u09c7 \u0996\u09b0\u099a \u09b9\u09af\u09bc \u09e8\u09ebx\u09e7\u09e8\u09ea \u099f\u09be\u0995\u09be = \u09e9\u09e7\u09e6\u09e6 \u099f\u09be\u0995\u09be\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u09e8\u09ec. \u098f\u0995\u099f\u09bf \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u09ad\u09c2\u09ae\u09bf \u09ea\u09e6 \u09ae\u09bf \u0993 \u0989\u099a\u09cd\u099a\u09a4\u09be \u09e9\u09e6 \u09ae\u09bf\u0964 \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09ac\u09b0\u09cd\u0997\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2\u09c7\u09b0 \u09b8\u09ae\u09be\u09a8\u0964&nbsp;<\/strong><\/p>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color\">\u0995) \u099a\u09bf\u09a4\u09cd\u09b0\u09b8\u09b9 \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u09b8\u0982\u099c\u09cd\u099e\u09be \u09b2\u09bf\u0996\u0964 <\/p>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color\">\u0996) \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964 <\/p>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color\">\u0997) \u09ac\u09b0\u09cd\u0997\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p><strong>\u0995)&nbsp;<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-253.jpg\" alt=\"\" class=\"wp-image-4454\" width=\"359\" height=\"162\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-253.jpg 739w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-253-300x136.jpg 300w\" sizes=\"(max-width: 359px) 100vw, 359px\" \/><\/figure>\n\n\n\n<p>\u0989\u09aa\u09b0\u09c7\u09b0 \u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u09ac\u09bf\u09aa\u09b0\u09c0\u09a4 \u09ac\u09be\u09b9\u09c1\u0997\u09c1\u09b2\u09be\u09c7 \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b8\u09ae\u09be\u09a8\u0964 \u0993 \u09b8\u09ae\u09be\u09a8\u09cd\u09a4\u09b0\u09be\u09b2 \u09ac\u09bf\u09a7\u09be\u09af\u09bc \u098f\u099f\u09bf \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u0996) <\/strong><\/p>\n\n\n\n<p>\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf, <\/p>\n\n\n\n<p>\u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = \u09ad\u09c2\u09ae\u09bfx\u0989\u099a\u09cd\u099a\u09a4\u09be<\/p>\n\n\n\n<p>= \u09ea\u09e6X\u09e9\u09e6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf<\/p>\n\n\n\n<p>=\u09e7\u09e8\u09e6\u09e6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u0997) <\/strong><\/p>\n\n\n\n<p>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09ac\u09b0\u09cd\u0997\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u098f\u0995 \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u0995\u0964 <\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09ae\u09a4\u09c7, \u0995<sup>\u09e8<\/sup> = \u09e7\u09e8\u09e6\u09e6 <\/p>\n\n\n\n<p>\u09ac\u09be, \u0995 = \u221a\u09e7\u09e8\u09e6\u09e6&nbsp;<\/p>\n\n\n\n<p>\u2234 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be=\u09e8(\u0995+\u0995)=\u09e8X\u09e8\u0995=8\u0995=\u09ea\u09e7\u09e8\u09e6\u09e6=\u09e7\u09e9\u09ee.\u09eb\u09ec \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p> <mark style=\"background-color:rgba(0, 0, 0, 0);color:#f70000\" class=\"has-inline-color\">\u09ac\u09bf:\u09a6\u09cd\u09b0: \u09a8\u09a4\u09c1\u09a8 \u09ac\u0987 \u0985\u09a8\u09c1\u09b8\u09be\u09b0\u09c7 \u09e8\u09ed \u09a8\u0982 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09c7\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u09a8\u09bf\u099a\u09c7 \u09a6\u09c7\u0993\u09df\u09be \u09b0\u09df\u09c7\u099b\u09c7\u0964<\/mark><\/p>\n\n\n\n<p>\u09e8\u09ed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-2555.jpg\" alt=\"\" class=\"wp-image-4457\" width=\"390\" height=\"214\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-2555.jpg 742w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-2555-300x165.jpg 300w\" sizes=\"(max-width: 390px) 100vw, 390px\" \/><\/figure>\n\n\n\n<p>\u099a\u09bf\u09a4\u09cd\u09b0\u09c7, ABCD \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be \u09e9\u09e6\u09e6 \u09ae\u09bf\u099f\u09be\u09b0 \u098f\u09ac\u0982 ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u098f\u09ab\u09b2 \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2\u09c7\u09b0 \u098f\u0995 \u099a\u09a4\u09c1\u09b0\u09cd\u09a5\u09be\u0982\u09b6\u0964&nbsp;<\/p>\n\n\n\n<p class=\"has-ast-global-color-0-color has-text-color\">\u0995) \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be\u0995\u09c7 \u0995\u09bf\u09b2\u09be\u09c7\u09ae\u09bf\u099f\u09be\u09b0 \u098f\u09ac\u0982 \u09b8\u09c7\u09a8\u09cd\u099f\u09bf\u09ae\u09bf\u099f\u09be\u09b0\u09c7 \u09aa\u09cd\u09b0\u0995\u09be\u09b6 \u0995\u09b0\u0964 <\/p>\n\n\n\n<p class=\"has-ast-global-color-0-color has-text-color\">\u0996) \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u0995\u09a4 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0 \u09a4\u09be \u09a8\u09bf\u09b0\u09cd\u09a8\u09af\u09bc \u0995\u09b0\u0964 <\/p>\n\n\n\n<p class=\"has-ast-global-color-0-color has-text-color\">\u0997) AF = \u0995\u09a4 \u09ae\u09bf\u099f\u09be\u09b0?&nbsp;<\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 <\/p>\n\n\n\n<p><strong>\u0995) <\/strong><\/p>\n\n\n\n<p>\u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be \u09e9\u09e6\u09e6 \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p>\u09e9\u09e6\u09e6 \u09ae\u09bf = <sup>\u09e9\u09e6\u09e6<\/sup>\/\u09e7\u09e6\u09e6\u09e6 \u0995\u09bf\u09ae\u09bf=\u09e6.\u09e9 \u0995\u09bf\u09ae\u09bf [\u09e7\u09e6\u09e6\u09e6 \u09ae\u09bf=\u09e7 \u0995\u09bf\u09ae\u09bf] <\/p>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0, \u09e9\u09e6\u09e6 \u09ae\u09bf = \u09e9\u09e6\u09e6x\u09e7\u09e6\u09e6 \u09b8\u09c7\u09ae\u09bf=\u09e9\u09e6\u09e6\u09e6\u09e6 \u09b8\u09c7\u09ae\u09bf [\u09e7\u09e6\u09e6 \u09b8\u09c7\u09ae\u09bf=\u09e7\u09ae\u09bf]&nbsp;<\/p>\n\n\n\n<p><strong>\u0996)<\/strong><\/p>\n\n\n\n<p>\u099a\u09bf\u09a4\u09cd\u09b0 \u09b9\u09a4\u09c7, <\/p>\n\n\n\n<p>\u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be = 2(x+2x) = 2x3x = 6x <\/p>\n\n\n\n<p>\u09a4\u09be\u09b9\u09b2\u09c7, <\/p>\n\n\n\n<p>6x= 300 <\/p>\n\n\n\n<p>\u09ac\u09be, x=<sup> 300<\/sup>\/<sub>6<\/sub> <\/p>\n\n\n\n<p>\u09ac\u09be, x= 50 <\/p>\n\n\n\n<p>\u09ac\u09be, 2x= 100 <\/p>\n\n\n\n<p>\u0985\u09a4\u098f\u09ac, \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u09ad\u09c2\u09ae\u09bf=\u09e7\u09e6\u09e6 \u09ae\u09bf <\/p>\n\n\n\n<p>\u0986\u09b0 \u0989\u099a\u09cd\u099a\u09a4\u09be = \u09eb \u09ae\u09bf (\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4) <\/p>\n\n\n\n<p>\u2234 \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=\u09e7\u09e6\u09e6X\u09eb \u09ac\u09b0\u09cd\u0997 \u09ae\u09bf=\u09eb\u09e6\u09e6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u0997) <\/strong><\/p>\n\n\n\n<p>ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2\u09c7\u09b0 \u098f\u0995 \u099a\u09a4\u09c1\u09b0\u09cd\u09a5\u09be\u0982\u09b6\u0964 <\/p>\n\n\n\n<p>ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = <sup>\u09eb\u09e6\u09e6<\/sup>\/\u09ea \u09ac\u09b0\u09cd\u0997\u09ae\u09bf = \u09e7\u09e8\u09eb \u09ac\u09b0\u09cd\u0997 \u09ae\u09bf <\/p>\n\n\n\n<p>\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf, \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2= <sup>\u09e7<\/sup>\/<sub>\u09e8<\/sub>(\u09ad\u09c2\u09ae\u09bfX\u0989\u099a\u09cd\u099a\u09a4\u09be)<\/p>\n\n\n\n<p>\u09ac\u09be, \u09e7\u09e8\u09eb = <em><sup>\u09e7<\/sup>\/<\/em><sub>\u09e8<\/sub>\u00d7AF\u00d7\u09eb <\/p>\n\n\n\n<p>\u09ac\u09be, \u09e7\u09e8\u09eb\u00d7\u09e8= <em>A<\/em>F\u00d7\u09eb <\/p>\n\n\n\n<p>\u09ac\u09be, AF\u00d7\u09eb= \u09e8\u09eb\u09e6 <\/p>\n\n\n\n<p>\u09ac\u09be, AF = <sup>\u09e8\u09eb\u09e6<\/sup><em>\/\u09eb <\/em><\/p>\n\n\n\n<p>\u09ac\u09be, AF = \u09eb\u09e6 \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p><strong>\u09e8\u09ed. <mark style=\"background-color:rgba(0, 0, 0, 0);color:#009e37\" class=\"has-inline-color\">(\u09e8\u09e6\u09e8\u09e7 \u098f\u09b0 \u09aa\u09be\u09a0\u09cd\u09af\u09ac\u0987 \u0985\u09a8\u09c1\u09b8\u09be\u09b0\u09c7)&nbsp;<\/mark><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-25552.jpg\" alt=\"\" class=\"wp-image-4466\" width=\"275\" height=\"157\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-25552.jpg 586w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-3-25552-300x172.jpg 300w\" sizes=\"(max-width: 275px) 100vw, 275px\" \/><\/figure>\n\n\n\n<p>\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 ABCD \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u099f\u09bf\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be \u09e9\u09e6 \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">\u0995) \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c1\u09a6\u09cd\u09b0\u09a4\u09ae \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09ac\u09c7\u09b0 \u0995\u09b0\u0964&nbsp;<\/mark><\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983&nbsp;<\/p>\n\n\n\n<p>\u099a\u09bf\u09a4\u09cd\u09b0 \u09ae\u09a4\u09c7, \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c1\u09a6\u09cd\u09b0\u09a4\u09ae \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af = x \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p>\u098f\u0996\u09a8,&nbsp;<\/p>\n\n\n\n<p>\u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u09aa\u09b0\u09c0\u09b8\u09c0\u09ae\u09be = 2(x+2x) =2.3x = 6x \u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09ae\u09a4\u09c7,&nbsp;<\/p>\n\n\n\n<p>6x = 30&nbsp;<\/p>\n\n\n\n<p>\u09ac\u09be, x= 30\/6&nbsp;<\/p>\n\n\n\n<p>\u09ac\u09be, x= 5&nbsp;<\/p>\n\n\n\n<p>\u09a4\u09be\u09b9\u09b2\u09c7, \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c1\u09a6\u09cd\u09b0\u09a4\u09ae \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af 5 \u09ae\u09bf\u099f\u09be\u09b0\u0964 <\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\"><strong>\u0996) ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964\u00a0<\/strong><\/mark><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983&nbsp;<\/p>\n\n\n\n<p>ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7,&nbsp;<\/p>\n\n\n\n<p>AD<sup>2<\/sup>=AF<sup><sup>2<\/sup><\/sup>+DF<sup>2<\/sup> [\u09aa\u09c0\u09a5\u09be\u0997\u09be\u09c7\u09b0\u09be\u09b8\u09c7\u09b0 \u0989\u09aa\u09aa\u09be\u09a6\u09cd\u09af \u0985\u09a8\u09c1\u09b8\u09be\u09b0\u09c7]&nbsp;<\/p>\n\n\n\n<p>\u09ac\u09be, 5<sup>2<\/sup> = AF<sup>2<\/sup>+4<sup><sup>2<\/sup><\/sup> [\u0995 \u09b9\u09a4\u09c7 x=5; DF=4(\u099a\u09bf\u09a4\u09cd\u09b0\u09ae\u09a4\u09c7)] <\/p>\n\n\n\n<p>\u09ac\u09be, AF<sup>2<\/sup> = 52-4<sup>2<\/sup> <\/p>\n\n\n\n<p>\u09ac\u09be, AF<sup>2<\/sup> = 25-16 <\/p>\n\n\n\n<p>\u09ac\u09be, AF<sup>2<\/sup> = 9 <\/p>\n\n\n\n<p>\u09ac\u09be, AF = 3 [\u09ac\u09b0\u09cd\u0997\u09ae\u09c2\u09b2 \u0995\u09b0\u09c7]&nbsp;<\/p>\n\n\n\n<p>\u0985\u09a4\u098f\u09ac,&nbsp;<\/p>\n\n\n\n<p>ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2&nbsp;<\/p>\n\n\n\n<p><sup>1<\/sup>\/<sub>2<\/sub>(\u09ad\u09c2\u09ae\u09bfx\u0989\u099a\u09cd\u099a\u09a4\u09be)&nbsp;<\/p>\n\n\n\n<p>= <sup>1<\/sup>\/<sub>2<\/sub>\u00d7AF\u00d7DF&nbsp;<\/p>\n\n\n\n<p>= <sup>1<\/sup>\/<sub>2<\/sub> \u00d7 3 \u00d7 4&nbsp;<\/p>\n\n\n\n<p>= 6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf\u099f\u09be\u09b0\u0964&nbsp;<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\"><strong>\u0997) BCDF\u00a0\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u0995\u09a4 \u09ac\u09b0\u09cd\u0997\u09b8\u09c7\u09a8\u09cd\u099f\u09bf\u09ae\u09bf\u099f\u09be\u09b0 \u09a4\u09be \u09a8\u09bf\u09b0\u09cd\u09a3\u09df \u0995\u09b0\u0964<\/strong><\/mark><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n<p>ABCD \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 = \u09ad\u09c2\u09ae\u09bf\u00d7\u0989\u099a\u09cd\u099a\u09a4\u09be&nbsp;<\/p>\n\n\n\n<p>= AB \u00d7 DF&nbsp;<\/p>\n\n\n\n<p>= 2x \u00d7 4&nbsp;<\/p>\n\n\n\n<p>=2 \u00d7 5 \u00d7 4 [\u0995 \u09b9\u09a4\u09c7 x=5]&nbsp;<\/p>\n\n\n\n<p>= 40 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf&nbsp;<\/p>\n\n\n\n<p>ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2&nbsp;<\/p>\n\n\n\n<p>= 6 \u09ac\u09b0\u09cd\u0997 \u09ae\u09bf\u099f\u09be\u09b0 [\u0996 \u09b9\u09a4\u09c7]&nbsp;<\/p>\n\n\n\n<p>\u09a4\u09be\u09b9\u09b2\u09c7,&nbsp;<\/p>\n\n\n\n<p>\u25a1 BCDF \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2&nbsp;<\/p>\n\n\n\n<p>= ABCD \u09b8\u09be\u09ae\u09a8\u09cd\u09a4\u09b0\u09bf\u0995\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 &#8211; ADF \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2&nbsp;<\/p>\n\n\n\n<p>= 40 \u09ac\u09b0\u09cd\u0997 \u09ae\u09bf\u2013 6 \u09ac\u09b0\u09cd\u0997\u09ae\u09bf&nbsp;<\/p>\n\n\n\n<p>= 34 \u09ac\u09b0\u09cd\u0997 \u09ae\u09bf\u0964&nbsp;<\/p>\n\n\n\n<p>= 340000 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09a8\u09cd\u099f\u09bf\u09ae\u09bf\u099f\u09be\u09b0\u0964 [\u09e7\u09e6\u09e6x\u09e7\u09e6\u09e6 \u09ac\u09b0\u09cd\u0997\u09b8\u09c7\u09ae\u09bf =\u09e7 \u09ac\u09b0\u09cd\u0997 \u09ae\u09bf]&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<pre class=\"wp-block-preformatted\"><em>tags: <\/em>Class 7 Math book solution BD pdf,Math lecture guide for class 7,class 7 math bd pdf, \u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0997\u09a3\u09bf\u09a4 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0-\u09e9 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af-\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09aa\u09b0\u09bf\u09ae\u09be\u09aa<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983&nbsp;\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution | Chapter 03 : Measurement \u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983&nbsp;\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 : &nbsp;\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09aa\u09b0\u09bf\u09ae\u09be\u09aa, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09aa\u09b0\u09bf\u09ae\u09be\u09aa, \u09a4\u09b0\u09b2\u09aa\u09a6\u09be\u09b0\u09cd\u09a5\u09c7\u09b0 \u0986\u09af\u09bc\u09a4\u09a8 \u09aa\u09b0\u09bf\u09ae\u09be\u09aa \u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983&nbsp;\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09b0 \u0997\u09a3\u09bf\u09a4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4333,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[33],"tags":[35,34],"class_list":["post-4432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-seven-7","tag-class-7","tag-class-seven"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983\u00a0\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD<\/title>\n<meta name=\"description\" content=\"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 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Chapter 03 : Measurement \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8....\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-3-lesson-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0985\u09a7\u09cd\u09af\u09be\u09df \u09e9\u09df\u0983\u00a0\u09aa\u09b0\u09bf\u09ae\u09be\u09aa | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e9 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD\" \/>\n<meta property=\"og:description\" content=\"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution. 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