The ratio between the breadth and perimeter of a rectangle is 2:10. If the area of the rectangle is 428 sq. cm, what is the length of the rectangle? A. 45.4 cm B. 25.4 cm C. 30.4 cm D. 40.4 cm Answer Workspace Report Discuss Answer with explanation Answer: Option B Explanation per the question = 2(L+B)/B = 10/2 2(L+B)/B = 5/1 2L + 2B = 5B 2B – 5B = – 2L – 3B = – 2L B = 2/3 L Given Area = 430 sq. cm. Area = Length * Breadth 430 = L * 2/3 L 430 = 2/3 L2 Or L2 = 1290 / 2 L2 = 645 L = 25.4 cm Workspace
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