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      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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