The cost of fencing a circular field at the rate of 24 per metre is 5280. The field is to be ploughed at the rate of 0.50 per m². Find the cost of ploughing the field.

Given that cost of fencing a circular field at the rate of Rs 24 per meter = Rs 5280

Fencing takes place at the circumference of the circular field.

So, the circumference of the field

We know that circumference of the circle = 2πr

⇒ r = 35 m (radius of the field)

Also, the area of a circle = πr²

⇒ Area of the field

The field is to be ploughed at the rate of 0.50 per m².

Cost of ploughing the field = 3850×0.50 = Rs 1925