Question

The cost of fencing a circular ground at the rate of Rs 48 per m is Rs 10560. The same

field has to be ploughed at the rate of Rs 2.50 per m2

. Find the total cost of ploughing

the field.​

Answer 1

Answer:

It will cost him 9621.125 rs

Explanation:

First you have to find the radius so

Circumference = 2 x pi x radius

Circumference can be found by the cost per meter divefe by the total money used so 220

220 = 2 x 22/7 x radius

220/2 = 22/7 x radius

110 = 22/7 x radius

110 x 7/22 = radius

35 = radius

To find area A = pi x radius^2 so

A = 22/7 x 35^2

A = 3848.45

Now to multiply the cost per meter for ploughing the land

3848.45 x 2.50 = 9621.125