Question

The radius of a circular swimming pool is 7. 8 meters. Which is closest to the circumference of this swimming pool?

Answer 1

C ≈ 49 m

Explanation:

the circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

here r = 7.8 m , then

C = 2π × 7.8 = 15.6π ≈ 49 m ( to the nearest whole number )