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    Two plots of land have the same perimeter. One is square of side 24 m and the other is a rectangle of length 28 m. The difference in their areas is
    Question

    Two plots of land have the same perimeter. One is square of side 24 m and the other is a rectangle of length 28 m. The difference in their areas is

    A.

    10 sq.m

    B.

    12 sq.m

    C.

    16 sq.m

    D.

    20 sq.m

    Correct option is C

    Given:

    One plot is a square with side = 24 m

    Other plot is a rectangle with length = 28 m

    Both plots have the same perimeter

    Find the difference in their areas

    Formula Used:

    Perimeter of square = 4 × side

    Perimeter of rectangle = 2(l + b)

    Area of square = (side)2

    Area of rectangle = l × b

    Solution:

    Perimeter of the square4 × 24 = 96 m

    Perimeter of the rectangle = 96 m

    2(l + b) = 96

    l + b = 48

    Given l = 28 m

    b = 48 - 28 = 20 m

    Area of square = 24 × 24 = 576 m2

    Area of rectangle = 28 × 20 = 560 m2

    Difference in areas576 - 560 = 16 m2

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