{"id":11122,"date":"2021-04-03T21:16:40","date_gmt":"2021-04-03T15:46:40","guid":{"rendered":"https:\/\/learnsteer.sasnaka.org\/ol\/?p=11122"},"modified":"2021-05-26T10:12:40","modified_gmt":"2021-05-26T04:42:40","slug":"area-of-focal-segments","status":"publish","type":"post","link":"https:\/\/learnsteer.sasnaka.org\/ol\/ordinary-level\/area-of-focal-segments\/","title":{"rendered":"\u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dc0\u0dbd \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba"},"content":{"rendered":"\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-shadow\"><a class=\"wp-block-button__link\" href=\"https:\/\/drive.google.com\/uc?id=https:\/\/drive.google.com\/file\/d\/1npDpWT5OiPuNP0Ucc-BTrnuj0soBFsYK\/view?usp=sharing&amp;export=download\" style=\"border-radius:15px\" target=\"_blank\" rel=\"noreferrer noopener\">\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\n<\/div>\n\n\n\n<p>\u0d85\u0dbb\u0dba r \u0dc4\u0dcf \u0d9a\u0ddd\u0dab\u0dba \u03b8 &nbsp;\u0dc0\u0db1 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0d9a \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba,<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"67\" src=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-34.png\" alt=\"\" class=\"wp-image-11124\" srcset=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-34.png 191w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-34-150x53.png 150w\" sizes=\"(max-width: 191px) 100vw, 191px\" \/><\/figure><\/div>\n\n\n\n<p>\u0d8b\u0daf\u0dcf\u0dc4\u0dbb\u0dab :-<\/p>\n\n\n\n<p>\u0daf\u0dd3 \u0d87\u0dad\u0dd2 \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0d85\u0dbb\u0dba 14cm \u0d9a\u0dca \u0daf \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9a\u0ddd\u0dab\u0dba 90\u00b0 \u0d9a\u0dca \u0dc0\u0db1 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"137\" height=\"133\" src=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-35.png\" alt=\"\" class=\"wp-image-11125\" \/><\/figure><\/div>\n\n\n\n<p>\u0db8\u0dda \u0dc3\u0daf\u0dc4\u0dcf \ud835\udf0br<sup>2<\/sup> \u00d7<span class=\"wp-katex-eq\" data-display=\"false\">\\frac\\theta{360\u00b0}<\/span> \u0dba\u0db1 \u0dc3\u0dd4\u0dad\u0dca\u200d\u0dbb\u0dba \u0db7\u0dcf\u0dc0\u0dd2\u0dad\u0dba \u0dc3\u0daf\u0dc4\u0dcf \u0d85\u0dc0\u0dc1\u0dca\u200d\u0dba \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9a\u0ddd\u0dab\u0dba ( \u03b8 ) \u0dc4\u0dcf \u0d85\u0dbb\u0dba (r) \u0dc4\u0daf\u0dd4\u0db1\u0dcf \u0d9c\u0db1\u0dd2\u0db8\u0dd4.<\/p>\n\n\n\n<p>\u0d91\u0dc0\u0dd2\u0da7 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9a\u0ddd\u0dab\u0dba (\u03b8) = 90\u00b0 \u0daf \u0d85\u0dbb\u0dba (r) = 14 cm \u0daf \u0dc0\u0dda. \u0daf\u0dd0\u0db1\u0dca \u0db8\u0dd9\u0db8 \u0d85\u0d9c\u0dba\u0db1\u0dca \u0dc3\u0dd4\u0dad\u0dca\u200d\u0dbb\u0dba\u0dd9\u0dc4\u0dd2 \u0d86\u0daf\u0dda\u0dc1 \u0d9a\u0dbb\u0db8\u0dd4.<\/p>\n\n\n\n<p>\u0db8\u0dd9\u0db8 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =&nbsp; \ud835\udf0br<sup>2<\/sup> \u00d7<span class=\"wp-katex-eq\" data-display=\"false\">\\frac\\theta{360\u00b0}<\/span> <\/p>\n\n\n\n<p>                                              =<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{22}7<\/span>\u00d714\u00d714\u00d7<span class=\"wp-katex-eq\" data-display=\"false\">\\frac\\90{360}<\/span> = 154cm<sup>2<\/sup><\/p>\n\n\n\n<p><strong>\u0d85\u0db7\u0dca\u200d\u0dba\u0dcf\u0dc3\u0dba 01<\/strong><strong><\/strong><\/p>\n\n\n\n<p><strong>1. <\/strong>\u0dbb\u0dd6\u0db4\u0dba\u0dda\u0daf\u0d9a\u0dca\u0dc0\u0dcf \u0d87\u0dad\u0dd2 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"192\" height=\"128\" src=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-36.png\" alt=\"\" class=\"wp-image-11126\" srcset=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-36.png 192w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-36-150x100.png 150w\" sizes=\"(max-width: 192px) 100vw, 192px\" \/><\/figure><\/div>\n\n\n\n<p><strong>&nbsp;<\/strong>2. \u0dc0\u0dd2\u0dc2\u0dca\u0d9a\u0db8\u0dca\u0db7\u0dba 14cm \u0d9a\u0dca \u0dc0\u0dd4 \u0daf \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9a\u0ddd\u0dab\u0dba 90\u00b0 \u0d9a\u0dca \u0dc0\u0dd4 \u0daf \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1<\/p>\n\n\n\n<p><strong>&nbsp;<\/strong>3. B\u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dbaA\u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0db8\u0dd9\u0db1\u0dca \u0d9a\u0dd3 \u0d9c\u0dd4\u0dab\u0dba\u0d9a\u0dca\u0daf?<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"283\" height=\"130\" src=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-37.png\" alt=\"\" class=\"wp-image-11127\" srcset=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-37.png 283w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-37-150x69.png 150w\" sizes=\"(max-width: 283px) 100vw, 283px\" \/><\/figure>\n\n\n\n<p>4.  \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0daf\u0dd0\u0d9a\u0dca\u0dc0\u0dd9\u0db1&nbsp; \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dc0\u0dbd \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd \u0db4\u0dd2\u0dc5\u0dd2\u0dc0\u0dd9\u0dbd\u0dd2\u0db1\u0dca E \u0dc4\u0dcf F&nbsp; \u0dc0\u0dda, \u0d92\u0dc0\u0dcf \u0db4\u0dd2\u0dbd\u0dd2\u0db6\u0daf \u0db1\u0dd2\u0dc0\u0dd0\u0dbb\u0daf\u0dd2 \u0dc0\u0db1\u0dca\u0db1\u0dda,<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"388\" height=\"151\" src=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-38.png\" alt=\"\" class=\"wp-image-11128\" srcset=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-38.png 388w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-38-300x117.png 300w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-38-150x58.png 150w\" sizes=\"(max-width: 388px) 100vw, 388px\" \/><\/figure>\n\n\n\n<p><strong>&nbsp;&nbsp;&nbsp;&nbsp; <\/strong>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i) E &gt; F \u0dc0\u0dda.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ii) F&gt; E \u0dc0\u0dda.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; iii) E=F \u0dc0\u0dda.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; iv ) E \u2260 F \u0dc0\u0dda.<\/p>\n\n\n\n<p>\u0d85\u0db7\u0dca\u200d\u0dba\u0dcf\u0dc3\u0dba 02<\/p>\n\n\n\n<p><strong>01. <\/strong>ABCD \u0dc3\u0dd8\u0da2\u0dd4 \u0d9a\u0ddd\u0dab\u0dcf\u0dc3\u0dca\u200d\u0dbb\u0dba\u0dd9\u0dc4\u0dd2 AB&nbsp; \u0db4\u0dcf\u0daf\u0dba\u0dd9\u0dc4\u0dd2 \u0db8\u0db0\u0dca\u200d\u0dba \u0dbd\u0d9a\u0dca\u0dc1\u0dca\u200d\u0dba\u0dba F \u0dc0\u0dda.\u0db8\u0dd9\u0db8 \u0dc3\u0dd8\u0da2\u0dd4\u0d9a\u0ddd\u0dab\u0dcf\u0dc3\u0dca\u200d\u0dbb\u0dba\u0da7 \u0dc3\u0db8\u0dca\u0db6\u0db1\u0dca\u0db0<\/p>\n\n\n\n<p>\u0d9a\u0dc5 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9a\u0dab\u0dca\u0da9\u0dba\u0d9a\u0dca \u0dc4\u0dcf \u0dad\u0dca\u200d\u0dbb\u0dd2\u0d9a\u0ddd\u0dab\u0dba\u0d9a\u0dca \u0dc3\u0dc4\u0dd2\u0dad \u0dc3\u0d82\u0dba\u0dd4\u0d9a\u0dca\u0dad \u0d9a\u0dc5 \u0dbb\u0dd6\u0db4\u0dba\u0d9a\u0dca \u0db8\u0dd9\u0dc4\u0dd2 \u0daf\u0dd0\u0d9a\u0dca\u0dc0\u0dda.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"244\" height=\"174\" src=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-39.png\" alt=\"\" class=\"wp-image-11129\" srcset=\"https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-39.png 244w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-39-150x107.png 150w, https:\/\/learnsteer.sasnaka.org\/ol\/wp-content\/uploads\/sites\/2\/2021\/03\/image-39-100x70.png 100w\" sizes=\"(max-width: 244px) 100vw, 244px\" \/><\/figure>\n\n\n\n<p>i) AF \u0dc4\u0dd3 \u0daf\u0dd2\u0d9c \u0d9a\u0dd2\u0dba\u0daf ?<\/p>\n\n\n\n<p>ii) AGF \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9a\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p>iii) ABCD \u0dc3\u0dd8\u0da2\u0dd4\u0d9a\u0ddd\u0dab\u0dcf\u0dc3\u0dca\u200d\u0dbb\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p>iv) CBE \u0dad\u0dca\u200d\u0dbb\u0dd2\u0d9a\u0ddd\u0dab\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p>v)&nbsp; \u0dc3\u0d82\u0dba\u0dd4\u0d9a\u0dca\u0dad \u0dad\u0dbd \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p>02.\u0dbb\u0dd6\u0db4\u0dba\u0dda \u0daf\u0dd0\u0d9a\u0dca\u0dc0\u0dd9\u0db1\u0dca\u0db1\u0dda \u0dad\u0dca\u200d\u0dbb\u0db4\u0dd3\u0dc3\u0dd2\u0dba\u0db8\u0d9a\u0dca \u0dc4\u0dcf \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0d9a\u0dca \u0dc3\u0db8\u0dca\u0db6\u0db1\u0dca\u0db0 \u0d9a\u0dd2\u0dbb\u0dd3\u0db8\u0dd9\u0db1\u0dca \u0dc3\u0d9a\u0dc3\u0dca \u0d9a\u0dc5 \u0dc3\u0d82\u0dba\u0dd4\u0d9a\u0dca\u0dad \u0dad\u0dbd \u0dbb\u0dd6\u0db4\u0dba\u0d9a\u0dd2.<\/p>\n\n\n\n<p>i)&nbsp; \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba \u0d85\u0dba\u0dad\u0dca \u0dc0\u0dd8\u0dad\u0dca\u0dad\u0dba\u0dda \u0d85\u0dbb\u0dba \u0d9a\u0dd3\u0dba\u0daf?<\/p>\n\n\n\n<p>ii) \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p>iii) \u0dad\u0dca\u200d\u0dbb\u0db4\u0dd3\u0dc3\u0dd2\u0dba\u0db8\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p>iv)&nbsp; \u0dc3\u0d82\u0dba\u0dd4\u0d9a\u0dca\u0dad \u0dad\u0dbd \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\n\n\n\n<p><strong>\u0db4\u0dd2\u0dc5\u0dd2\u0dad\u0dd4\u0dbb\u0dd4<\/strong><strong><\/strong><\/p>\n\n\n\n<p><strong>\u0d85\u0db7\u0dca\u200d\u0dba\u0dcf\u0dc3\u0dba 01<\/strong><strong><\/strong><\/p>\n\n\n\n<p>1. 19.25 cm<sup>2<\/sup><\/p>\n\n\n\n<span class=\"wp-katex-eq\" data-display=\"false\">A\\;=\\;\\mathrm{\u03c0r}^{2\\;}\\times\\;\\frac{45^0}{360^0}\\;=\\;\\frac{22}7\\times7^2\\times\\frac18\\;=\\;19.25\\;\\mathrm{cm}^2<\/span>\n\n\n\n<p>2. 38.5 &nbsp;cm<sup>2<\/sup><\/p>\n\n\n\n<p>&nbsp;( \u0d89\u0dc4\u0dad \u0dbd\u0dd9\u0dc3\u0db8 \u0dc3\u0dd6\u0dad\u0dca\u200d\u0dbb\u0dba \u0dba\u0dd9\u0daf\u0dd3\u0db8\u0dd9\u0db1\u0dca )<\/p>\n\n\n\n<p>3. \u0daf\u0dd9\u0d9c\u0dd4\u0dab\u0dba\u0d9a\u0dca<\/p>\n\n\n\n<p>(\u0db8\u0dd9\u0db8 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9 \u0daf\u0dd9\u0d9a\u0dda \u0d85\u0dbb\u0dba\u0db1 \u0dc3\u0db8\u0dcf\u0db1 \u0dc0\u0dda \u2026 \u0daf\u0dd9\u0dc0\u0dd0\u0db1\u0dca\u0db1\u0dda \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb \u0d9a\u0ddd\u0dab\u0dba &nbsp;\u0db4\u0dbd\u0db8\u0dd4\u0dc0\u0dd0\u0db1\u0dca\u0db1\u0dda \u0db8\u0dd9\u0db1\u0dca \u0daf\u0dd9\u0d9c\u0dd4\u0dab\u0dba\u0d9a\u0dca \u0db1\u0dd2\u0dc3\u0dcf \u0d91\u0dc4\u0dd2 \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0dba\u0daf \u0daf\u0dd9\u0d9c\u0dd4\u0dab\u0dba\u0d9a\u0dd2.)<\/p>\n\n\n\n<p>4. E = F<\/p>\n\n\n\n<p>( F \u0dc4\u0dd2 \u0d85\u0dbb\u0dba r \u0db1\u0db8\u0dca E \u0dc4\u0dd2 \u0d85\u0dbb\u0dba 2r \u0dc0\u0dda E \u0dc4\u0dd2 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb \u0d9a\u0ddd\u0dab\u0dba \u03b8 <strong><em>&nbsp;<\/em><\/strong>\u0db1\u0db8\u0dca F \u0dc4\u0dd2 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb \u0d9a\u0ddd\u0dab\u0dba 4\u03b8&nbsp;\u0dc0\u0dda.)<\/p>\n\n\n\n<p>E \u0dc4\u0dd2 \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba=<span class=\"wp-katex-eq\" data-display=\"false\">\\mathrm\\pi(2\\mathrm r)^2^\\;\\times\\;\\frac{\\;\\mathrm\\theta^0}{360^0}\\;=\\;4\\mathrm{\u03c0r}\\frac{\\;\\mathrm\\theta^0}{360^0}<\/span><\/p>\n\n\n\n<p>F \u0dc4\u0dd2 \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba= <span class=\"wp-katex-eq\" data-display=\"false\">\\mathrm{\u03c0r}^2^\\;\\times\\;\\frac{\\;4\\mathrm\\theta^0}{360^0}\\;=\\;4\\mathrm{\u03c0r}\\frac{\\;\\mathrm\\theta^0}{360^0}<\/span><\/p>\n\n\n\n<p>\u0d92 \u0d85\u0db1\u0dd4\u0dc0 \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd \u0dc3\u0db8\u0dcf\u0db1 \u0dc0\u0dda.<\/p>\n\n\n\n<p><strong>\u0d85\u0db7\u0dca\u200d\u0dba\u0dcf\u0dc3\u0dba 02<\/strong><\/p>\n\n\n\n<p>1.<\/p>\n\n\n\n<p>(I) 14cm<\/p>\n\n\n\n<p>(II)154cm<sup>2<\/sup><\/p>\n\n\n\n<p>\u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba = <span class=\"wp-katex-eq\" data-display=\"false\">\\mathrm{\u03c0r}^2^\\;\\times\\;\\frac{\\;\\mathrm\\theta}{360}\\;\\;=\\;\\frac{22}7\\times14\\times14\\times\\frac{\\;90^0}{360^0}\\;=\\;154\\mathrm{cm}^2<\/span><\/p>\n\n\n\n<p>(III) 420cm<sup>2<\/sup><\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;  ( 15&#215;28)<\/p>\n\n\n\n<p>(IV)  90cm<sup>2<\/sup><\/p>\n\n\n\n<p>(\u00bd x 12 x 15)<\/p>\n\n\n\n<p>&nbsp;(V) 664cm<sup>2<\/sup><\/p>\n\n\n\n<p>(154+ 420 + 90)<\/p>\n\n\n\n<p>&nbsp;2.<\/p>\n\n\n\n<p>(I) 28cm<\/p>\n\n\n\n<p>(II) 308cm<sup>2<\/sup><\/p>\n\n\n\n<p>(III) 868cm<sup>2<\/sup> <\/p>\n\n\n\n<span class=\"wp-katex-eq\" data-display=\"false\">\\mathrm A=\\frac{22}7\\times28\\times28\\times\\frac{45}{360}<\/span>\n\n\n\n<p>&nbsp;( 32+30.)\/2  \u00d7 &nbsp;28<\/p>\n\n\n\n<p>(IV) 1176cm<sup>2<\/sup><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"epyt-video-wrapper\"><iframe loading=\"lazy\"  id=\"_ytid_85202\"  width=\"696\" height=\"392\"  data-origwidth=\"696\" data-origheight=\"392\"  data-relstop=\"1\" src=\"https:\/\/www.youtube.com\/embed\/glzqeV-z4I4?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;rel=0&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-shadow td_btn_normal\"><a class=\"wp-block-button__link\" href=\"https:\/\/drive.google.com\/uc?id=https:\/\/drive.google.com\/file\/d\/1npDpWT5OiPuNP0Ucc-BTrnuj0soBFsYK\/view?usp=sharing\" style=\"border-radius:15px\" target=\"_blank\" rel=\"noreferrer noopener\">\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u0d89\u0daf\u0dd2\u0dbb\u0dd2\u0dba\u0dda\u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0d87\u0dad\u0dd4\u0dbd\u0dad\u0dca \u0dc0\u0db1\u0dca\u0db1\u0dda \u0db8\u0dd9\u0dad\u0db1\u0da7\u0dba\u0dd2.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-shadow td_btn_normal\"><a class=\"wp-block-button__link\" href=\"https:\/\/drive.google.com\/uc?id=1Et8V2zU47bJMKqgyV7zfhq1OvM8J6YG3&amp;export=download\" style=\"border-radius:15px\" target=\"_blank\" rel=\"noreferrer noopener\">\u0dad\u0dc0\u0dad\u0dca \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dd2\u0d9a \u0d9b\u0dab\u0dca\u0da9\u0dc0\u0dbd \u0dc0\u0dbb\u0dca\u0d9c\u0db5\u0dbd\u0dba \u0db4\u0dd2\u0dc5\u0dd2\u0db6\u0db3\u0dc0 \u0dc3\u0dd2\u0daf\u0dca\u0db0\u0dcf\u0db1\u0dca\u0dad\u0dba \u0db4\u0dd0\u0dc4\u0dd0\u0daf\u0dd2\u0dc5\u0dd2 \u0d9a\u0dbb \u0d92 \u0db4\u0dd2\u0dc5\u0dd2\u0db6\u0db3\u0dc0 \u0d9c\u0dd0\u0da7\u0dbd\u0dd4 \u0dc0\u0dd2\u0dc3\u0db3\u0dd3\u0db8 \u0db8\u0dd9\u0db8 \u0d9a\u0ddc\u0da7\u0dc3\u0dda \u0daf\u0dd3 \u0dc3\u0dd2\u0daf\u0dd4\u0d9a\u0dd9\u0dbb\u0dda.<\/p>\n","protected":false},"author":21,"featured_media":11443,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","footnotes":""},"categories":[3756,3787,3753,3623],"tags":[3784,3780,3781,3782,3783,3786,3785],"class_list":{"0":"post-11122","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-paper-1","8":"category-mathamatics","9":"category-measurements","10":"category-ordinary-level","11":"tag-area","12":"tag-area-of-focal-segments","13":"tag-kandrika-kandawala-wargapalaya","14":"tag-kendrika-kanda","15":"tag-wargapalaya","16":"tag-3786","17":"tag-3785"},"_links":{"self":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts\/11122"}],"collection":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/comments?post=11122"}],"version-history":[{"count":11,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts\/11122\/revisions"}],"predecessor-version":[{"id":11728,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts\/11122\/revisions\/11728"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/media\/11443"}],"wp:attachment":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/media?parent=11122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/categories?post=11122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/tags?post=11122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}