Question

the cost of putting a fence around a square Field at ₹25 per metre is ₹2000. what is length of each side

Answer 1

the perimeter of the square field = 2000/25=80m
side of square=80/4=20m
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Answer 2

The cost of putting a fence per metre = 25
Cost of putting the fence around a square field of a*a = 2000
therefore total length of the field (perimeter) = 2000/25
                                                                           = 80 metres (perimeter)
there each side of the square                         = 80/4
                                                                           = 20 metres (each side of the field)