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    Question

    The perimeter of 4 squares is 20 cm, 28 cm, 32 cm and 48

    cm respectively. What will be the area of the square having perimeter equal to sum of edges of 4 squares? (in sq.cm)
    A 144 sq.cm Correct Answer Incorrect Answer
    B 121 sq.cm Correct Answer Incorrect Answer
    C 100 sq.cm Correct Answer Incorrect Answer
    D 81 sq.cm Correct Answer Incorrect Answer
    E 64 sq.cm Correct Answer Incorrect Answer

    Solution

    Let side of 4 squares be a, b, c and d cm respectively. => a = 20/4 = 5 cm => b = 28/4 = 7 cm => c = 32/4 = 8 cm => d = 48/4 = 12 cm Perimeter of new square = a + b + c + d = 32 => side = 32/4 = 8 cm Required area = side2 = 82 = 64 cm2.

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