{"id":20763,"date":"2026-05-25T05:47:27","date_gmt":"2026-05-24T23:47:27","guid":{"rendered":"https:\/\/mcqacademy.com\/en\/mcq\/semicircle-area-calculation\/"},"modified":"2026-05-25T05:47:27","modified_gmt":"2026-05-24T23:47:27","slug":"semicircle-area-calculation","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/en\/mcq\/semicircle-area-calculation\/","title":{"rendered":"Semicircle Area Calculation"},"content":{"rendered":"<p>A semicircular window has radius 41 cm. Using \u03c0 = 3.14, what is its area?<\/p>\n<ul class=\"quiz-options\">\n<li>257.48 cm\u00b2<\/li>\n<li>1681 cm\u00b2<\/li>\n<li>2639.17 cm\u00b2<\/li>\n<li>5278.34 cm\u00b2<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[2875,2823],"subject":[2746],"education_level":[1894],"class_list":["post-20763","mcq","type-mcq","status-publish","hentry","topic-circle","topic-composite-figures","subject-mensuration","education_level-grade-8"],"mcq_note":"A semicircle is half of a circle. Area = 1\/2 \u00d7 \u03c0r\u00b2 = 1\/2 \u00d7 3.14 \u00d7 41 \u00d7 41 = 2639.17 square cm. The radius is multiplied by itself first because area depends on r\u00b2. Be careful not to use 2\u03c0r here; that formula gives circumference, not area. The correct choice is 2639.17 cm\u00b2.","mcq_options":[{"right":"no","answer":"257.48 cm\u00b2"},{"right":"no","answer":"1681 cm\u00b2"},{"right":"yes","answer":"2639.17 cm\u00b2"},{"right":"no","answer":"5278.34 cm\u00b2"}],"multi_answers":"no","subject_terms":[{"id":2746,"title":"Mensuration","slug":"mensuration"}],"topic_terms":[{"id":2875,"title":"Circle","slug":"circle"},{"id":2823,"title":"Composite Figures","slug":"composite-figures"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq\/20763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq"}],"about":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/types\/mcq"}],"author":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/comments?post=20763"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/media?parent=20763"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/topic?post=20763"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/subject?post=20763"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/education_level?post=20763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}