the cost of cultivating a rectangular field at ₹35 per square metre is ₹ 71400. if the width of the field id 40 m, find the length. Also, find the cost of fencing the field at ₹ 50 per metre.
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71400=lengthx40
length=71400/40
length = 1785
perimeter = 2[1785+40]
perimeter = 3650 meter
cost of fencing = 3650x50
cost = 182500
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