Question

The diameter of a circular ground is 42 m. Find the cost of fencing it at the rate

of Rs. 90 per m. (Take Π = 22

7

)​

Answer 1

Answer:

11880 rupees

Step-by-step explanation:

circumference = boundary

so, circumference = 2 π r

radius = diameter ÷ 2

= 42 ÷ 2

= 21

2 π r

2 × 22/7 × 21

2 × 22 × 3

44 × 3

132

we have to fence it only 1 time

so, 132 × 1

it is 90 rupees

so, 132 × 90

11880 is Ans

PLEASE mark brainliest