Question

    The perimeter of 3 squares is 18 cm, 27 cm and 36 cm

    respectively. What will be the area of the square having perimeter equal to sum of edges of 3 squares? (in sq.cm)
    A 64 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 144 sq.cm Correct Answer Incorrect Answer

    Solution

    Let side of 3 squares be a, b and c cm respectively. => a = 18/3 = 6 cm => b = 27/3 = 9 cm => c = 36/3 = 12 cm Perimeter of new square = a + b + c = 27 => side = 27/3 = 9 cm Required area = side2 = 92 = 81 cm2.

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