Question

The radius of a circular park is 2.1 m .find the cost of fencing it at the rate of ₹12 per meter​

Answer 1

SolutioN :-

• Radius of circular park = 2.1 m

★ Circumference of park = 2πr

→ 2 × 22/7 × 2.1

→ 2 × 22 × 0.3

→ 44 × 0.3

→ 13.2 m

Circumference of park is 13.2 m

Cost of 1 m fencing = ₹ 12

Cost of 13.2 m fencing = 12 × 13.2 = 158.4

∴ Cost of fencing is ₹ 158.4