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      Question

      The length of the rectangle is triple its breadth. If

      the perimeter of the rectangle is 80 m, then find the area (in m2) of the rectangle.
      A 320 Correct Answer Incorrect Answer
      B 200 Correct Answer Incorrect Answer
      C 360 Correct Answer Incorrect Answer
      D 300 Correct Answer Incorrect Answer

      Solution

      Let the breadth of the rectangle = x, so the length of the rectangle = 3x Perimeter = 2(l + b) 80 = 2(x + 3x) 40 = 4x x = 10 Breadth = 10 m, Length = 30 m So the area of the rectangle = 10 × 30 = 300 m2

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