Total cost of fencing a circular field = Rs 5280
Cost of fencing per meter = Rs 24
So,
The total length of the field = The total cost of fencing/cost of fencing per meter
= 5280/24
= 220 m
Here, the total length of the field would be the circumference of the circular field.
∴ Total length = Circumference of circular field
⇒ 220 = 2πr
= 3850m2
Now,
Cost of ploughing 1m2 of the field = Rs 0.50
Cost of ploughing 3850m2 of the field = Rs 0.50 × 3850
= Rs 1925
Hence, the cost of ploughing the field is Rs 1925