Question

find the cost of blowing a circular field at the rate of 4 rupees per square metre is the circumference of the field is 132m

Answer 1

Answer:

circumference=2πr=132

2(22/7)r=132

r=132×7/(2×44)

r=3×7/2

Area=πr^2

=(22/7)(21/2)(21/2)

=11×3×21

cost=4×11×3×21 Rs