{"id":21040,"date":"2026-05-25T16:51:15","date_gmt":"2026-05-25T10:51:15","guid":{"rendered":"https:\/\/mcqacademy.com\/en\/mcq\/semicircle-area-calculation-13\/"},"modified":"2026-05-25T16:51:15","modified_gmt":"2026-05-25T10:51:15","slug":"semicircle-area-calculation-13","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/en\/mcq\/semicircle-area-calculation-13\/","title":{"rendered":"Semicircle Area Calculation"},"content":{"rendered":"<p>A semicircular window has radius 49 mm. Using \u03c0 = 22\/7, what is its area?<\/p>\n<ul class=\"quiz-options\">\n<li>7546 mm\u00b2<\/li>\n<li>3773 mm\u00b2<\/li>\n<li>307.72 mm\u00b2<\/li>\n<li>2401 mm\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-21040","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 22\/7 \u00d7 49 \u00d7 49 = 3773 square mm. 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 3773 mm\u00b2.","mcq_options":[{"right":"no","answer":"7546 mm\u00b2"},{"right":"yes","answer":"3773 mm\u00b2"},{"right":"no","answer":"307.72 mm\u00b2"},{"right":"no","answer":"2401 mm\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\/21040","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=21040"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/media?parent=21040"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/topic?post=21040"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/subject?post=21040"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/education_level?post=21040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}