{"id":5294,"date":"2022-10-21T19:21:16","date_gmt":"2022-10-21T19:21:16","guid":{"rendered":"https:\/\/www.studyzonebd.com\/math\/?p=5294"},"modified":"2022-10-21T19:28:07","modified_gmt":"2022-10-21T19:28:07","slug":"class-8-chapter-10-lesson-10-3","status":"publish","type":"post","link":"https:\/\/www.studyzonebd.com\/math\/class-8-chapter-10-lesson-10-3\/","title":{"rendered":"\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"},"content":{"rendered":"\n<p>\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u09ee\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 Eight (08) <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>10 : Circle| Class 8 math book Online Solution in Bangla (BD)<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 : \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf, \u09ac\u09cd\u09af\u09be\u09b8, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2, \u09ac\u09c7\u09b2\u09a8 &#8211; <a href=\"#download-pdf-521415415\">PDF<\/a><\/h4>\n\n\n\n<p>\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\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 \u09ee\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-ast-global-color-1-color has-text-color wp-block-heading\"><span style=\"text-decoration: underline;\"><strong>\u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09b0 \u0997\u09a3\u09bf\u09a4 \u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/strong><\/span><\/h4>\n\n\n\n<p><strong>\u09e7. \u0995\u09cb\u09a8 \u09b8\u09ae\u09a4\u09b2\u09c7-<\/strong><\/p>\n\n\n\n<p>i. \u09a6\u09c1\u0987\u099f\u09bf \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u09a6\u09bf\u09af\u09bc\u09c7 \u0985\u09b8\u0982\u0996\u09cd\u09af \u09ac\u09be \u098f\u0995\u09be\u09a7\u09bf\u0995 \u09ac\u09c3\u09a4\u09cd\u09a4 \u0986\u0981\u0995\u09be \u09af\u09be\u09af\u09bc\u0964<\/p>\n\n\n\n<p>ii. \u09b8\u09ae\u09b0\u09c7\u0996 \u09a8\u09af\u09bc \u098f\u09ae\u09a8 \u09a4\u09bf\u09a8\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u09a6\u09bf\u09af\u09bc\u09c7 \u0995\u09c7\u09ac\u09b2 \u098f\u0995\u099f\u09bf\u0987 \u09ac\u09c3\u09a4\u09cd\u09a4 \u0986\u0981\u0995\u09be \u09af\u09be\u09af\u09bc\u0964<\/p>\n\n\n\n<p>iii. \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be-\u0995\u09cb\u09a8 \u09ac\u09c3\u09a4\u09cd\u09a4\u0995\u09c7 \u09a6\u09c1\u0987\u09af\u09bc\u09c7\u09b0 \u0985\u09a7\u09bf\u0995 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u0964<\/p>\n\n\n\n<p><strong>\u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a8\u099f\u09bf \u09b8\u09a0\u09bf\u0995?<\/strong><\/p>\n\n\n\n<p>\u0995) i \u0993 ii&nbsp;&nbsp;&nbsp;&nbsp;\u0996) i \u0993 ii&nbsp;&nbsp;&nbsp;&nbsp;\u0997) ii \u0993 iii&nbsp;&nbsp;&nbsp;&nbsp;\u0998) i, ii \u0993 iii<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<a><\/a><\/p>\n\n\n\n<p><strong>\u09e8. 2r \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0-<\/strong><\/p>\n\n\n\n<p>i. \u09aa\u09b0\u09bf\u09a7\u09bf 4\u03c0r&nbsp;\u098f\u0995\u0995<\/p>\n\n\n\n<p>ii. \u09ac\u09cd\u09af\u09be\u09b8 4r \u098f\u0995\u0995<\/p>\n\n\n\n<p>iii. \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=2\u03c0r<sup>2<\/sup>&nbsp;\u09ac\u09b0\u09cd\u0997 \u098f\u0995\u0995<\/p>\n\n\n\n<p><strong>\u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a8\u099f\u09bf \u09b8\u09a0\u09bf\u0995?<\/strong><\/p>\n\n\n\n<p>\u0995) i \u0993 ii&nbsp;&nbsp;&nbsp;&nbsp;\u0996) i \u0993 ii&nbsp;&nbsp;&nbsp;&nbsp;\u0997) ii \u0993 iii&nbsp;&nbsp;&nbsp;&nbsp;\u0998) i, ii \u0993 iii<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n<p><strong>\u09e9. 3 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a5\u09c7\u0995\u09c7 6 \u09b8\u09c7\u09ae\u09bf \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u09c7\u09b0 \u099c\u09cd\u09af\u09be \u098f\u09b0 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac \u0995\u09a4 \u09b8\u09c7\u09ae\u09bf?<\/strong><\/p>\n\n\n\n<p>\u0995) 6&nbsp;&nbsp;&nbsp;&nbsp;\u0996) 3&nbsp;&nbsp;&nbsp;&nbsp;\u0997) 2&nbsp;&nbsp;&nbsp;&nbsp;\u0998) 0<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n<p>[\u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8 3 \u09b8\u09c7\u09ae\u09bf, \u09a4\u09be\u09b9\u09b2\u09c7 \u09ac\u09cd\u09af\u09be\u09b8=6 \u09b8\u09c7\u09ae\u09bf\u0964 \u098f\u0996\u09a8 6 \u09b8\u09c7\u09ae\u09bf \u099c\u09cd\u09af\u09be \u09ac\u09cd\u09af\u09be\u09b8 \u09ad\u09bf\u09a8\u09cd\u09a8 \u0985\u09a8\u09cd\u09af \u0995\u09bf\u099b\u09c1 \u09a8\u09af\u09bc\u0964 \u09a4\u09be\u0987 \u098f\u099f\u09bf \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09bf\u09af\u09bc\u09c7 \u09af\u09be\u09ac\u09c7, \u0985\u09b0\u09cd\u09a5\u09be\u09ce \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a5\u09c7\u0995\u09c7 \u098f\u09b0 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac 0 \u09b9\u09ac\u09c7]<\/p>\n\n\n\n<p><strong>\u09ea. \u098f\u0995\u0995 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2-<\/strong><\/p>\n\n\n\n<p>\u0995) 1 \u09ac\u09b0\u09cd\u0997 \u098f\u0995\u0995&nbsp;&nbsp;&nbsp;&nbsp;\u0996) 2 \u09ac\u09b0\u09cd\u0997 \u098f\u0995\u0995&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u0997)&nbsp;\u03c0&nbsp;\u09ac\u09b0\u09cd\u0997 \u098f\u0995\u0995&nbsp;&nbsp;&nbsp;&nbsp;\u0998)&nbsp;\u03c0<sup>2&nbsp;&nbsp;<\/sup>\u09ac\u09b0\u09cd\u0997 \u098f\u0995\u0995&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n<p>[\u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=&nbsp;\u03c0r<sup>2<\/sup>.&nbsp;r=1 \u09b9\u09b2\u09c7 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09b9\u09ac\u09c7=&nbsp;\u03c0.1<sup>2<\/sup>=&nbsp;\u03c0]<\/p>\n\n\n\n<p><strong>\u09eb. \u0995\u09cb\u09a8 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf 23 \u09b8\u09c7\u09ae\u09bf \u09b9\u09b2\u09c7 \u098f\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u0995\u09a4?<\/strong><\/p>\n\n\n\n<p>\u0995) 2.33 \u09b8\u09c7\u09ae\u09bf (\u09aa\u09cd\u09b0\u09be\u09af\u09bc)&nbsp;&nbsp;&nbsp;\u0996) 3.66 \u09b8\u09c7\u09ae\u09bf (\u09aa\u09cd\u09b0\u09be\u09af\u09bc)&nbsp;&nbsp;&nbsp;\u0997) 7.32 \u09b8\u09c7\u09ae\u09bf (\u09aa\u09cd\u09b0\u09be\u09af\u09bc)&nbsp;&nbsp;&nbsp;\u0998) 11.5 \u09b8\u09c7\u09ae\u09bf (\u09aa\u09cd\u09b0\u09be\u09af\u09bc)&nbsp;&nbsp;<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0996<\/p>\n\n\n\n<p>[\u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf=2\u03c0r<\/p>\n\n\n\n<p>\u09ac\u09be, 23=2\u03c0r<\/p>\n\n\n\n<p>\u09ac\u09be, r=23\/2\u03c0<\/p>\n\n\n\n<p>\u09ac\u09be, r=3.66]<\/p>\n\n\n\n<p><strong>\u09ec. 3 \u09b8\u09c7\u09ae\u09bf \u098f\u09ac\u0982 2 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u098f\u0995 \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0\u09bf\u0995 \u09a6\u09c1\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf \u09a6\u09cd\u09ac\u09af\u09bc\u09c7\u09b0 \u09ae\u09be\u099d\u09c7\u09b0 \u0985\u0982\u09b6\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u0995\u09a4 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf?<\/strong><\/p>\n\n\n\n<p>\u0995)&nbsp;\u03c0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u0996) 3\u03c0&nbsp;&nbsp;&nbsp;&nbsp;\u0997) 4\u03c0&nbsp;&nbsp;&nbsp;&nbsp;\u0998) 5\u03c0<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n<p>[\u09ae\u09be\u099d\u09c7\u09b0 \u0985\u0982\u09b6\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a6\u09c1\u0987\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2\u09c7\u09b0 \u09ac\u09bf\u09af\u09bc\u09cb\u0997\u09ab\u09b2=\u03c0.3<sup>2<\/sup>-\u03c0.2<sup>2<\/sup>=\u03c0.9-\u03c0.4=\u03c0(9-4)=5\u03c0]<\/p>\n\n\n\n<p><strong>\u09ed. \u0995\u09cb\u09a8 \u0997\u09be\u09a1\u09bc\u09bf\u09b0 \u099a\u09be\u0995\u09be\u09b0 \u09ac\u09cd\u09af\u09be\u09b8 38 \u09b8\u09c7\u09ae\u09bf \u09b9\u09b2\u09c7 \u09a6\u09c1\u0987 \u09ac\u09be\u09b0 \u0998\u09c1\u09b0\u09c7 \u099a\u09be\u0995\u09be\u099f\u09bf \u0995\u09a4 \u09b8\u09c7\u09ae\u09bf (\u09aa\u09cd\u09b0\u09be\u09af\u09bc) \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac \u0985\u09a4\u09bf\u0995\u09cd\u09b0\u09ae \u0995\u09b0\u09ac\u09c7?<\/strong><\/p>\n\n\n\n<p>\u0995) 59.69 cm&nbsp;&nbsp;&nbsp;\u0996) 76 cm&nbsp;&nbsp;&nbsp;\u0997) 119.38 cm&nbsp;&nbsp;&nbsp;&nbsp;\u0998) 238.76 cm<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998&nbsp;&nbsp;<\/p>\n\n\n\n<p>[\u099a\u09be\u0995\u09be\u09b0 \u09ac\u09cd\u09af\u09be\u09b8=2r=38 cm;<\/p>\n\n\n\n<p>\u2234&nbsp;\u09aa\u09b0\u09bf\u09a7\u09bf=2\u03c0r=\u03c0.2r=3.1416\u271538=119.3808 cm;<\/p>\n\n\n\n<p>\u099a\u09be\u0995\u09be\u099f\u09bf\u09b0 \u098f\u0995 \u09ac\u09be\u09b0\u09c7 \u0998\u09c2\u09b0\u09cd\u09a3\u09a8\u09c7 \u0985\u09a4\u09bf\u0995\u09cd\u09b0\u09be\u09a8\u09cd\u09a4 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac=119.3808 cm<\/p>\n\n\n\n<p>\u2234&nbsp;\u099a\u09be\u0995\u09be\u099f\u09bf\u09b0 2 \u09ac\u09be\u09b0\u09c7 \u0998\u09c2\u09b0\u09cd\u09a3\u09a8\u09c7 \u0985\u09a4\u09bf\u0995\u09cd\u09b0\u09be\u09a8\u09cd\u09a4 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac=119.3808\u27152=238.7616 cm]<\/p>\n\n\n\n<p>\u25a3 <strong>\u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u0986\u09b2\u09cb\u0995\u09c7 \u09ee,\u09ef \u0993 \u09e7\u09e6 \u09a8\u0982 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09c7\u09b0 \u0989\u09a4\u09cd\u09a4\u09b0 \u09a6\u09be\u0993\u0983<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"187\" height=\"188\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/10\/class-10-chapter-10.3-101.jpg\" alt=\"\" class=\"wp-image-5301\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/10\/class-10-chapter-10.3-101.jpg 187w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/10\/class-10-chapter-10.3-101-150x150.jpg 150w\" sizes=\"(max-width: 187px) 100vw, 187px\" \/><\/figure>\n\n\n\n<p>\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 O \u09ac\u09c3\u09a4\u09cd\u09a4\u099f\u09bf\u09b0 \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0\u0964 BE=4 cm<\/p>\n\n\n\n<p><strong>\u09ee.&nbsp;&nbsp;OE=OF \u09b9\u09b2\u09c7, CD=\u0995\u09a4 \u09b8\u09c7\u09ae\u09bf?<\/strong><\/p>\n\n\n\n<p>\u0995) 3 cm&nbsp;&nbsp;&nbsp;&nbsp;\u0996) 4 cm&nbsp;&nbsp;&nbsp;&nbsp;\u0997) 6 cm&nbsp;&nbsp;&nbsp;&nbsp;\u0998) 8 cm<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n<p>[OE, AB \u098f\u09b0 \u09b2\u09ae\u09cd\u09ac \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac; \u09a4\u09be\u09b9\u09b2\u09c7, BE=AE=4 cm \u09ac\u09be, AE=8 cm;<\/p>\n\n\n\n<p>OE=OF \u09b9\u09b2\u09c7, \u099c\u09cd\u09af\u09be AB=CD \u09b9\u09ac\u09c7; \u0985\u09b0\u09cd\u09a5\u09be\u09ce, AB=CD=8 cm]<\/p>\n\n\n\n<p><strong>\u09ef. AB=CD \u098f\u09ac\u0982 OE=3 \u09b8\u09c7\u09ae\u09bf \u09b9\u09b2\u09c7, \u09ac\u09c3\u09a4\u09cd\u09a4\u099f\u09bf\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u0995\u09a4 \u09b8\u09c7\u09ae\u09bf?<\/strong><\/p>\n\n\n\n<p>\u0995) 3&nbsp;&nbsp;&nbsp;&nbsp;\u0996) 4&nbsp;&nbsp;&nbsp;&nbsp;\u0997) 5&nbsp;&nbsp;&nbsp;&nbsp;\u0998) 6<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n<p>[OB<sup>2<\/sup>=BE<sup>2<\/sup>+OE<sup>2<\/sup>=4<sup>2<\/sup>+3<sup>2<\/sup>=16+9=25 \u09ac\u09be, OB=5; \u09aa\u09bf\u09a5\u09be\u0997\u09cb\u09b0\u09be\u09b8\u09c7\u09b0 \u0989\u09aa\u09aa\u09be\u09a6\u09cd\u09af\u09c7\u09b0 \u09b8\u09c2\u09a4\u09cd\u09b0\u09be\u09a8\u09c1\u09b8\u09be\u09b0\u09c7]<\/p>\n\n\n\n<p><strong>\u09e7\u09e6. AB&gt;CD \u09b9\u09b2\u09c7 \u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a8\u099f\u09bf \u09b8\u09a0\u09bf\u0995?<\/strong><\/p>\n\n\n\n<p>\u0995) CF&lt;BE&nbsp;&nbsp;&nbsp;&nbsp;\u0996) OE&gt;OF&nbsp;&nbsp;&nbsp;&nbsp;\u0997) OE&lt;OF&nbsp;&nbsp;&nbsp;&nbsp;\u0998) OE=OF<\/p>\n\n\n\n<p>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n<p>[\u099c\u09cd\u09af\u09be \u09af\u09a4 \u09ac\u09a1\u09bc \u09b9\u09ac\u09c7 \u09a4\u09be\u09b0 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac \u09a4\u09a4 \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0\u09c7\u09b0 \u0995\u09be\u099b\u09c7 \u09a5\u09be\u0995\u09ac\u09c7]<\/p>\n\n\n\n<p><strong>\u09e7\u09e7. \u09aa\u09cd\u099b\u09a8\u09cd\u09a6\u09ae\u09a4\u09cb \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0 \u0993 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09a8\u09bf\u09af\u09bc\u09c7 \u09aa\u09c7\u09a8\u09cd\u09b8\u09bf\u09b2 \u0995\u09ae\u09cd\u09aa\u09be\u09b8 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u098f\u0995\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4 \u0986\u0981\u0995\u0964 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0989\u09aa\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u0986\u0981\u0995\u0964 \u09ae\u09c7\u09aa\u09c7 \u09a6\u09c7\u0996 \u09b8\u09ac\u0997\u09c1\u09b2\u09cb \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09b8\u09ae\u09be\u09a8 \u0995\u09bf-\u09a8\u09be\u0964<\/strong><\/p>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.studyzonebd.com\/math\/class-8-chapter-10-lesson-10-3\/class-10-chapter-10-3-102\/\"><img decoding=\"async\" width=\"174\" height=\"170\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/10\/class-10-chapter-10.3-102.jpg\" alt=\"\" class=\"wp-image-5302\"\/><\/a><\/figure>\n\n\n\n<p>\u09aa\u099b\u09a8\u09cd\u09a6 \u09ae\u09a4 \u0995\u09c7\u09a8\u09cd\u09a6\u09cd\u09b0 O \u09b2\u09bf\u09b2\u09be\u09ae \u098f\u09ac\u0982 4 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09a8\u09bf\u09af\u09bc\u09c7 \u09aa\u09c7\u09a8\u09cd\u09b8\u09bf\u09b2 \u0995\u09ae\u09cd\u09aa\u09be\u09b8\u09c7\u09b0 \u09b8\u09be\u09b9\u09be\u09af\u09cd\u09af\u09c7 ABCD \u09ac\u09c3\u09a4\u09cd\u09a4 \u0986\u0981\u0995\u09b2\u09be\u09ae\u0964 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0989\u09aa\u09b0 OA, OB, OC, OD \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u0986\u0981\u0995\u09b2\u09be\u09ae\u0964 \u098f\u0996\u09a8, \u09b8\u09cd\u0995\u09c7\u09b2\u09c7\u09b0 \u09b8\u09be\u09b9\u09be\u09af\u09cd\u09af\u09c7 OA, OB, OC \u0993 OD \u098f\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09ae\u09be\u09aa\u09b2\u09be\u09ae \u098f\u09ac\u0982 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af 4 \u09b8\u09c7\u09ae\u09bf. \u09aa\u09c7\u09b2\u09be\u09ae\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09e8. \u09a8\u09bf\u09a8\u09cd\u09ae\u09ac\u09b0\u09cd\u09a3\u09bf\u09a4 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0983<\/strong><\/p>\n\n\n\n<p><strong>\u0995) 10 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;\u0996) 14 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;\u0997) 21 \u09b8\u09c7\u09ae\u09bf<\/strong><\/p>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf, \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf=2\u03c0r&nbsp;&nbsp;[r=\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7;&nbsp;\u03c0=3.1416]<\/p>\n\n\n\n<p><strong>\u0995)<\/strong>&nbsp;10 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf<\/p>\n\n\n\n<p>=2\u03c0.10<\/p>\n\n\n\n<p>=2\u27153.1416\u271510<\/p>\n\n\n\n<p>=62.832 cm<\/p>\n\n\n\n<p><strong>\u0996)<\/strong>&nbsp;14 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf<\/p>\n\n\n\n<p>=2\u03c0.14<\/p>\n\n\n\n<p>=2\u27153.1416\u271514<\/p>\n\n\n\n<p>=87.9648 cm<\/p>\n\n\n\n<p><strong>\u0997)<\/strong>&nbsp;21 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf<\/p>\n\n\n\n<p>=2\u03c0.21<\/p>\n\n\n\n<p>=2\u27153.1416\u271521<\/p>\n\n\n\n<p>=131.9472 cm<\/p>\n\n\n\n<p><strong>\u09e7\u09e9. \u09a8\u09bf\u09a8\u09cd\u09ae\u09ac\u09b0\u09cd\u09a3\u09bf\u09a4 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0983<\/strong><\/p>\n\n\n\n<p><strong>\u0995) \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 = 12 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;&nbsp;\u0996) \u09ac\u09cd\u09af\u09be\u09b8 = 34 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;\u0997) \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 = 21 \u09b8\u09c7\u09ae\u09bf<\/strong><\/p>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf, \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=\u03c0r<sup>2<\/sup>&nbsp;[r=\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7;&nbsp;\u03c0=3.1416]<\/p>\n\n\n\n<p><strong>\u0995)<\/strong>&nbsp;\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 12 cm \u098f\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=&nbsp;\u03c0r<sup>2<\/sup><\/p>\n\n\n\n<p>=&nbsp;3.1416\u271512<sup>2<\/sup><\/p>\n\n\n\n<p>=452.3904 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p><strong>\u0996)<\/strong>&nbsp;\u09ac\u09cd\u09af\u09be\u09b8=34 \u09b8\u09c7\u09ae\u09bf; \u09a4\u09be\u09b9\u09b2\u09c7 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7= 34\/2 \u09b8\u09c7\u09ae\u09bf=17 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 17 cm \u098f\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=&nbsp;\u03c0r<sup>2<\/sup><\/p>\n\n\n\n<p>=3.1416\u271517<sup>2<\/sup><\/p>\n\n\n\n<p>=907.9224 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p><strong>\u0997)<\/strong>&nbsp;\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 21 cm \u098f\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=&nbsp;\u03c0r<sup>2<\/sup><\/p>\n\n\n\n<p>=3.1416\u271521<sup>2<\/sup><\/p>\n\n\n\n<p>=138\/5.4456 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09ea. \u098f\u0995\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u09b6\u09bf\u099f\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf 154 \u09b8\u09c7\u09ae\u09bf \u09b9\u09b2\u09c7, \u098f\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u0995\u09a4? \u09b6\u09bf\u099f\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u09b6\u09bf\u099f\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7=r \u09b8\u09c7\u09ae\u09bf<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09ae\u09a4\u09c7,<\/p>\n\n\n\n<p>2\u03c0r=154&nbsp;&nbsp;[\u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf\u09b0 \u09b8\u09c2\u09a4\u09cd\u09b0 \u09ae\u09a4\u09c7]<\/p>\n\n\n\n<p>\u09ac\u09be, 2\u27153.1416\u2715r=154<\/p>\n\n\n\n<p>\u09ac\u09be, r\u27156.2832=154<\/p>\n\n\n\n<p>\u09ac\u09be, r=154\/6.2832<\/p>\n\n\n\n<p>\u09ac\u09be, r=24.5098 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u098f\u0996\u09a8, \u09b6\u09c0\u099f\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=\u03c0r<sup>2<\/sup><\/p>\n\n\n\n<p>=3.1416\u2715(24.5098)<sup>2<\/sup><\/p>\n\n\n\n<p>=1887.254 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u0985\u09a4\u098f\u09ac,&nbsp;\u09b6\u09bf\u099f\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7=24.5098 \u09b8\u09c7\u09ae\u09bf \u098f\u09ac\u0982 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=1887.254 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09eb. \u098f\u0995\u099c\u09a8 \u09ae\u09be\u09b2\u09c0 21 \u09ae\u09bf. \u09ac\u09cd\u09af\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u099a\u09be\u09b0\u09a6\u09bf\u0995\u09c7 \u09a6\u09c1\u0987\u09ac\u09be\u09b0 \u0998\u09c1\u09b0\u09bf\u09af\u09bc\u09c7 \u09a6\u09a1\u09bc\u09bf\u09b0 \u09ac\u09c7\u09a1\u09bc\u09be \u09a6\u09bf\u09a4\u09c7 \u099a\u09be\u09af\u09bc\u0964 \u09aa\u09cd\u09b0\u09a4\u09bf \u09ae\u09bf\u099f\u09be\u09b0 \u09a6\u09a1\u09bc\u09bf\u09b0 \u09ae\u09c2\u09b2\u09cd\u09af 18 \u099f\u09be\u0995\u09be \u09b9\u09b2\u09c7, \u09a4\u09be\u0995\u09c7 \u0995\u09a4 \u099f\u09be\u0995\u09be\u09b0 \u09a6\u09a1\u09bc\u09bf \u0995\u09bf\u09a8\u09a4\u09c7 \u09b9\u09ac\u09c7?<\/strong><\/p>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>\u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 r=21 \u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u09a4\u09be\u09b9\u09b2\u09c7, \u09ac\u09be\u0997\u09be\u09a8\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf=2\u03c0r=2\u27153.1416\u271521=131.9472&nbsp;\u09ae\u09bf.<\/p>\n\n\n\n<p>\u09af\u09c7\u09b9\u09c7\u09a4\u09c1 \u09ae\u09be\u09b2\u09bf \u09a6\u09a1\u09bc\u09bf \u09a6\u09c1\u0987\u09ac\u09be\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf\u0995\u09c7 \u0998\u09c2\u09b0\u09bf\u09af\u09bc\u09c7 \u09ac\u09c7\u09a1\u09bc\u09be \u09a6\u09bf\u09a4\u09c7 \u099a\u09be\u09a8 \u09b8\u09c7\u09b9\u09c7\u09a4\u09c1 \u09a6\u09a1\u09bc\u09bf\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u09b9\u09ac\u09c7 \u09aa\u09b0\u09bf\u09a7\u09bf\u09b0 \u09a6\u09cd\u09ac\u09bf\u0997\u09c1\u09a8\u0964<\/p>\n\n\n\n<p>\u09a6\u09a1\u09bc\u09bf\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af=2\u2715131.9472 \u09ae\u09bf=263.8944 \u09ae\u09bf&nbsp;\u2248&nbsp;264 \u09ae\u09bf (\u09aa\u09cd\u09b0\u09be\u09af\u09bc)<\/p>\n\n\n\n<p>\u098f\u0996\u09a8 1 \u09ae\u09bf\u099f\u09be\u09b0 \u09a6\u09a1\u09bc\u09bf\u09b0 \u09ae\u09c2\u09b2\u09cd\u09af 18 \u099f\u09be\u0995\u09be<\/p>\n\n\n\n<p>\u2234&nbsp;264 \u09ae\u09bf\u099f\u09be\u09b0 \u09a6\u09a1\u09bc\u09bf\u09b0 \u09ae\u09c2\u09b2\u09cd\u09af = 264\u271518=4752 \u099f\u09be\u0995\u09be\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09ec. \u09a8\u09bf\u099a\u09c7\u09b0 \u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u099f\u09bf\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964<\/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\/10\/class-10-chapter-10.3-103.jpg\" alt=\"\" class=\"wp-image-5304\" width=\"157\" height=\"166\"\/><\/figure>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>\u099a\u09bf\u09a4\u09cd\u09b0\u09c7, \u099a\u09be\u09b0\u099f\u09bf \u0985\u09b0\u09cd\u09a7\u09ac\u09c3\u09a4\u09cd\u09a4 \u0986\u099b\u09c7\u0964<\/p>\n\n\n\n<p>\u098f\u0996\u09a8, 4\u099f\u09bf \u0985\u09b0\u09cd\u09a7\u09ac\u09c3\u09a4\u09cd\u09a4=2\u099f\u09bf \u09aa\u09c2\u09b0\u09cd\u09a3\u09ac\u09c3\u09a4\u09cd\u09a4\u0964<\/p>\n\n\n\n<p>\u098f\u0996\u09be\u09a8\u09c7, \u09ac\u09cd\u09af\u09be\u09b8=14 \u09b8\u09c7\u09ae\u09bf<\/p>\n\n\n\n<p>\u2234&nbsp;\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7=14\/2=7 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u2234&nbsp;\u09aa\u09b0\u09bf\u09a7\u09bf<\/p>\n\n\n\n<p>=2\u27152\u03c0r<\/p>\n\n\n\n<p>=2\u27152\u27153.1416\u27157<\/p>\n\n\n\n<p>=87.9648&nbsp;\u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09ed. 14 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u09ac\u09cb\u09b0\u09cd\u09a1 \u09a5\u09c7\u0995\u09c7 1.5 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u09a6\u09c1\u0987\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u0985\u0982\u09b6 \u098f\u09ac\u0982&nbsp;&nbsp;3 \u09b8\u09c7\u09ae\u09bf \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u0993&nbsp;&nbsp;1 \u09b8\u09c7\u09ae\u09bf \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0 \u0985\u0982\u09b6 \u0995\u09c7\u099f\u09c7 \u09a8\u09c7\u0993\u09af\u09bc\u09be \u09b9\u09b2\u09cb\u0964 \u09ac\u09cb\u09b0\u09cd\u09a1\u09c7\u09b0 \u09ac\u09be\u0995\u09bf \u0985\u0982\u09b6\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09ac\u09c7\u09b0 \u0995\u09b0\u0964<\/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\/10\/class-10-chapter-10.3-104.jpg\" alt=\"\" class=\"wp-image-5305\" width=\"204\" height=\"211\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/10\/class-10-chapter-10.3-104.jpg 306w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/10\/class-10-chapter-10.3-104-291x300.jpg 291w\" sizes=\"(max-width: 204px) 100vw, 204px\" \/><\/figure>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>14 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u09ac\u09cb\u09b0\u09cd\u09a1\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=\u03c0.r<sup>2<\/sup><\/p>\n\n\n\n<p>=\u03c0.14<sup>2<\/sup><\/p>\n\n\n\n<p>=3.1416\u271514<sup>2<\/sup><\/p>\n\n\n\n<p>=615.7536&nbsp;\u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>1.5 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7\u09c7\u09b0 \u09a6\u09c1\u0987\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4\u09be\u0995\u09be\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=2.&nbsp;\u03c0.r<sup>2<\/sup><\/p>\n\n\n\n<p>=2\u27153.1416\u2715(1.5)<sup>2<\/sup><\/p>\n\n\n\n<p>=14.1372&nbsp;\u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>3 \u09b8\u09c7\u09ae\u09bf \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af \u0993&nbsp;&nbsp;1 \u09b8\u09c7\u09ae\u09bf \u09aa\u09cd\u09b0\u09b8\u09cd\u09a5\u09c7\u09b0 \u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0 \u0985\u0982\u09b6\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=\u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u2715\u09aa\u09cd\u09b0\u09b8\u09cd\u09a5<\/p>\n\n\n\n<p>=3\u27151<\/p>\n\n\n\n<p>=3 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u2234&nbsp;\u099b\u09cb\u099f \u09a6\u09c1\u0987\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4 \u0993 \u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0 \u0985\u0982\u09b6\u09c7\u09b0 \u09ae\u09cb\u099f \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=14.1372+3 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf=17.1372 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u099b\u09cb\u099f \u09a6\u09c1\u0987\u099f\u09bf \u09ac\u09c3\u09a4\u09cd\u09a4 \u0993 \u0986\u09af\u09bc\u09a4\u09be\u0995\u09be\u09b0 \u0985\u0982\u09b6 \u09ac\u09be\u09a6\u09c7 \u09ac\u09cb\u09b0\u09cd\u09a1\u09c7\u09b0 \u09ac\u09be\u0995\u09c0 \u0985\u0982\u09b6\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2<\/p>\n\n\n\n<p>=615.7536&nbsp;\u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf-17.1372 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf<\/p>\n\n\n\n<p>=598.6164 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09ee. 5.5 \u09b8\u09c7\u09ae\u09bf \u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7 \u09ac\u09bf\u09b6\u09bf\u09b7\u09cd\u099f \u098f\u0995\u099f\u09bf \u09b8\u09ae\u09ac\u09c3\u09a4\u09cd\u09a4\u09ad\u09c2\u09ae\u09bf\u0995 \u09ac\u09c7\u09b2\u09a8\u09c7\u09b0 \u0989\u099a\u09cd\u099a\u09a4\u09be 8 \u09b8\u09c7\u09ae\u09bf\u0964 \u09ac\u09c7\u09b2\u09a8\u099f\u09bf\u09b0 \u09b8\u09ae\u0997\u09cd\u09b0 \u09aa\u09c3\u09b7\u09cd\u09a0\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0 (<\/strong><strong>\u03c0<\/strong><strong>=3.14)\u0964<\/strong><\/p>\n\n\n\n<p><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n<p>\u0986\u09ae\u09b0\u09be \u099c\u09be\u09a8\u09bf,<\/p>\n\n\n\n<p>\u09b8\u09ae\u09ac\u09c3\u09a4\u09cd\u09a4\u09ad\u09c2\u09ae\u09bf\u0995 \u09ac\u09c7\u09b2\u09a8\u09c7\u09b0 \u09b8\u09ae\u0997\u09cd\u09b0 \u09aa\u09c3\u09b7\u09cd\u09a0\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2=2\u03c0r(r+h)<\/p>\n\n\n\n<p>\u098f\u0996\u09be\u09a8\u09c7,&nbsp;\u03c0=3.14 [\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7]<\/p>\n\n\n\n<p>r=\u09ac\u09cd\u09af\u09be\u09b8\u09be\u09b0\u09cd\u09a7=5.5 \u09b8\u09c7\u09ae\u09bf<\/p>\n\n\n\n<p>h=\u0989\u099a\u09cd\u099a\u09a4\u09be=8 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<p>\u2234&nbsp;2\u03c0r(r+h)<\/p>\n\n\n\n<p>=2\u27153.14\u27155.5(5.5+8)<\/p>\n\n\n\n<p>=2\u27153.14\u27155.5\u271513.5<\/p>\n\n\n\n<p>=466.29 \u09ac\u09b0\u09cd\u0997 \u09b8\u09c7\u09ae\u09bf\u0964<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<figure id=\"download-pdf-521415415\" class=\"wp-block-table is-style-regular\"><table class=\"has-vivid-cyan-blue-border-color has-border-color\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Class 8 math book all chapter solution Bangla version pdf | \u09ee\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 PDF<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-cool-to-warm-spectrum-gradient-background has-background\" href=\"https:\/\/drive.google.com\/file\/d\/10YhMRD2UE1BQZaaJKuOFmjmKWOV01lji\/view\" target=\"_blank\" rel=\"noreferrer noopener\">Download<\/a><\/div><\/td><\/tr><\/tbody><\/table><\/figure>\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>Bangladesh, Bangla, Bengali, Class 8\/jsc math solution 2021 pdf, 8th class maths guide pdf free download, math book solution BD, JSC srijonshil math, Chapter 10.3, \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf, \u09ac\u09cd\u09af\u09be\u09b8, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2, \u09ac\u09c7\u09b2\u09a8<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u09ee\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 Eight (08) Math Book Solution | Chapter 10 : Circle| Class 8 math book Online Solution in Bangla (BD) \u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 : \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf, \u09ac\u09cd\u09af\u09be\u09b8, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2, \u09ac\u09c7\u09b2\u09a8 &#8211; PDF \u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4919,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","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 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[36],"tags":[37,38],"class_list":["post-5294","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-eight-8","tag-class-8","tag-class-eight"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD<\/title>\n<meta name=\"description\" content=\"\u09ee\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 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Chapter 10 : circle. \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0989\u09aa\u09aa\u09be\u09a6\u09cd\u09af: \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf, \u09ac\u09cd\u09af\u09be\u09b8, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2, \u09ac\u09c7\u09b2\u09a8 \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-8-chapter-10-lesson-10-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD\" \/>\n<meta property=\"og:description\" content=\"\u09ee\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 Eight (08) Math Book Solution. Chapter 10 : circle. \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0989\u09aa\u09aa\u09be\u09a6\u09cd\u09af: \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf, \u09ac\u09cd\u09af\u09be\u09b8, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2, \u09ac\u09c7\u09b2\u09a8 \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.studyzonebd.com\/math\/class-8-chapter-10-lesson-10-3\/\" \/>\n<meta property=\"og:site_name\" content=\"Study Zone BD\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/studyzonebdcom\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/studyzonebdcom\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-21T19:21:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-10-21T19:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-8-math-book-solution-in-bangla.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1360\" \/>\n\t<meta property=\"og:image:height\" content=\"680\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"StudyZone BD\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@StudyZoneBD_com\" \/>\n<meta name=\"twitter:site\" content=\"@StudyZoneBD_com\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"StudyZone BD\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/\"},\"author\":{\"name\":\"StudyZone BD\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#\\\/schema\\\/person\\\/eb47b9e07c0f27fa4d114357c2eda1e2\"},\"headline\":\"\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\",\"datePublished\":\"2022-10-21T19:21:16+00:00\",\"dateModified\":\"2022-10-21T19:28:07+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/\"},\"wordCount\":364,\"publisher\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/class-8-math-book-solution-in-bangla.jpg\",\"keywords\":[\"class 8\",\"class eight\"],\"articleSection\":[\"Class Eight (8)\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/\",\"url\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/\",\"name\":\"\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/class-8-chapter-10-lesson-10-3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.studyzonebd.com\\\/math\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/class-8-math-book-solution-in-bangla.jpg\",\"datePublished\":\"2022-10-21T19:21:16+00:00\",\"dateModified\":\"2022-10-21T19:28:07+00:00\",\"description\":\"\u09ee\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 Eight (08) Math Book Solution. 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Chapter 10 : circle. \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u0989\u09aa\u09aa\u09be\u09a6\u09cd\u09af: \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf, \u09ac\u09cd\u09af\u09be\u09b8, \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09ab\u09b2, \u09ac\u09c7\u09b2\u09a8 \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.studyzonebd.com\/math\/class-8-chapter-10-lesson-10-3\/","og_locale":"en_US","og_type":"article","og_title":"\u09e7\u09e6\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09ac\u09c3\u09a4\u09cd\u09a4 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09e7\u09e6.\u09e9 | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD","og_description":"\u09ee\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 Eight (08) Math Book Solution. 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