Question

The cost of fencing a circular field at rs 11.50 per metre is rs 2350. The field is to be ploughed at the rate of RS 6.50 per m2. Find the cost of ploughing the field

Answer 1

perimeter=2350/11.50=204m,

2 πr: 204, r=204/6.28

r = 32.54m

Area = πr^2 = 3.14x32,54x32.54

= 3324.8m2

Cost of ploughing=3324,8x6.5

= Rs21610