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Question

the perimeter of a rectangular field is 3/5 km. if the length of the field is twice its width find the area of the rectangle in m sq

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Solution

Let the width of the rectangular field = x metrethen the length of the rectangular field = 2x metreNow, perimeter of the field = 35 km = 35 × 1000 m = 600 m2length + breadth = 600length + breadth = 3002x + x = 3003x = 300x = 100Now, width of the field = 100 mlength of the field = 2×100 = 200 mNow, area = length × breadth = 200 × 100 = 20000 m2

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