{"id":18646,"date":"2026-05-03T19:35:29","date_gmt":"2026-05-03T13:35:29","guid":{"rendered":"https:\/\/mcqacademy.com\/en\/mcq\/use-a-perimeter-formula-to-find-a-variable-6\/"},"modified":"2026-05-03T19:35:29","modified_gmt":"2026-05-03T13:35:29","slug":"use-a-perimeter-formula-to-find-a-variable-6","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/en\/mcq\/use-a-perimeter-formula-to-find-a-variable-6\/","title":{"rendered":"Use a Perimeter Formula to Find a Variable"},"content":{"rendered":"<p>A rectangle has length 12 cm and width w cm. If its perimeter is 30 cm, what is w?<\/p>\n\n<ul class=\"quiz-options wp-block-list\">\n<li>4<\/li>\n<li>12<\/li>\n<li>15<\/li>\n<li>3<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[2705],"subject":[1425],"education_level":[1893,2494,2495],"class_list":["post-18646","mcq","type-mcq","status-publish","hentry","topic-algebra","subject-mathematics","education_level-grade-5","education_level-grade-6","education_level-grade-7"],"mcq_note":"Use P = 2(l+w). Substitute: 30=2(12+w). Divide by 2: 15=12+w. So w=15-12=3.","mcq_options":[{"right":"no","answer":"4"},{"right":"no","answer":"12"},{"right":"no","answer":"15"},{"right":"yes","answer":"3"}],"multi_answers":"no","subject_terms":[{"id":1425,"title":"Mathematics","slug":"mathematics"}],"topic_terms":[{"id":2705,"title":"Algebra","slug":"algebra"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq\/18646","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=18646"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/media?parent=18646"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/topic?post=18646"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/subject?post=18646"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/education_level?post=18646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}