the cost of cultivating a rectangular field at ra 35 per square metre is rs 71400. if the width of the field is 40 m.find its length.also cost of the fencing the field at rs 50 per metre

Total cost of cultivating the rectangular field = Rs.71400
Rate = 35 per sqm.
So area of rectangular field = 7140035 = 240 m2
Suppose the length of field is l .
And width of field = 40 m
So, area of field = 40×l = 240 sq.m.
l = 24040 = 6 m
So perimeter of rectangular field = 240+6 = 2×46 = 92 m
So, Cost of fencing per meter = Rs.50
Therefore, total cost of fencing 92 m = 92×50 = Rs.4600

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