Question

Cost of fencing around a square field is Rs. 12000. If the cost of fencing per metre is Rs. 30, find the area of the square field.
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Answer 1

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Cost of fencing per metre = Rs 30 Total cost of fencing = Rs 12000 So the length of fencing perimeter = Total cost/ Cost per metre = 1200/30= 400 m Now length of fencing = Perimeter of the square field  = 4 × side of the field Therefore 4 × side of the field = 400 m or side of the field = 400/4 m = 100 m So area of the field = 100 m × 100 m = 10000 sq m.

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