Question

Find the cost of fencing a circular park at the rate of ₹10 per metre. The radius of the park is 21 m.

Answer 1

Answer:

1386

Step-by-step explanation:

area of circle=pie×radius square metre

=22/7x21x21=1386

area of ciricle=1386

Cost of fencing=10×1386

=138600

hence the cost of fencing a circular park at the rate of rupess 10 is 13600 square per metre.

Answer 2

Step-by-step explanation:

2*(22/7*)21

=2*22*3

=132

new cost of fencing is 10 per metre

=10*132

=1320