Question

The cost of ploughing a square field at 13.50 Rs per sq. is 5400 Rs . Find the cost of fencing the field at 28.50 Rs per metre.

Answer 1

Total area = Cost of ploughing / Rate per sq. m

​​​​​​= 5400/13.50
= 400 sq. m
Since it is square field = a x a = 400
-> a = 20 m

Perimeter = 4a
= 4x20
= 80 m
Cost of fencing per m = 28.50

Therefore total cost = 80 x 28.50
= Rs. 2280
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