Question

The radius of a circular plot is 21 metres. How much will it cost to fence the plot with 2
rounds of wire at the rate of 20 rupees per metre?​

Answer 1

Step-by-step explanation:

Radius = 21m

Circumference =

$2\pi\:r \\ 2 \times \frac{22}{7} \times 21 \\ = 2 \times 22 \times 3\\ = 44 \times 3 \\ = 132$

Circumference: 132m

Length of wire used: 132×2=264m

price: 264×20=5280 rs

MARK AS THE BRAINLIEST!