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    Question

    The perimeter of a rectangle is 48 cm, and the ratio of

    its length to breadth is 3:5. What is the area of the rectangle?
    A 108 cm┬▓ Correct Answer Incorrect Answer
    B 135 cm┬▓ Correct Answer Incorrect Answer
    C 150 cm┬▓ Correct Answer Incorrect Answer
    D 180 cm┬▓ Correct Answer Incorrect Answer

    Solution

    Let the length of the rectangle be 3x and the breadth be 5x. The perimeter of the rectangle is given by: 2 ├Ч (length + breadth) = 48 тЖТ 2 ├Ч (3x + 5x) = 48 тЖТ 16x = 48 тЖТ x = 3. So, the length is 3 ├Ч 3 = 9 cm and the breadth is 5 ├Ч 3 = 15 cm. The area of the rectangle is: Area = length ├Ч breadth = 9 ├Ч 15 = 135 cm┬▓. Correct answer: b. 135 cm┬▓

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