📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

    âš¡ Month End Offer - Flat 52% Off On All Courses! Enroll Now âš¡
    00:00:00 AM Left

    Question

    If the length and breadth of a rectangle are in the

    ratio 5:3 and its perimeter is 48 cm, then the area of the rectangle (in cm²) is :   
    A 84 cm² Correct Answer Incorrect Answer
    B 135 cm² Correct Answer Incorrect Answer
    C 192 cm² Correct Answer Incorrect Answer
    D 168 cm² Correct Answer Incorrect Answer

    Solution

    Using the formula, Perimeter = 2(l + b) & Area = length x breadth Let the length and breadth of the rectangle be 5x and 3x cm respectively. Then, 2(5x + 3x) = 48 ⇒ 16x = 48 ⇒ x = 48/16 = 3 Therefore, length = 5x = 15 cm Breadth = 3x = 9 cm Therefore, area = lb = 15 x 9 = 135 cm²

    Practice Next
    More Mensuration Questions
    ask-question