Question

The cost of fencing a circular field at the Rs 9.50 per metre is Rs 2926.
Find the cost of ploughing the field at Rs 1.50 per square metre

Answer 1

cost of fencing per meter=9.50
total cost=2926
area of field=2926÷9.50=308 square meters.

for ploughing if it costs 150 per square meter.

for 308 meters=308×1.50=462

it's the answer

Answer 2

the cost of fencing the field = 9.50 per meter
so,total cost = 2926
then, the circumference of circle =2926/9.50
= 308
so, perimeter =2 pie r
308 = 2*22/7*r
r = 49
area of circle = pie * r square
= 22/7 * 49 *49
= 3.14 * 2401
= 7539.14 m square
ploughing the field at the cost of = 1.50 per m square
so., for 7539.14 m square it costs = 7539.14 * 1.50 = 11308.71