Question

The formula for the circumference of a circle is c=2pir where r is the radius and c is the circumference. The equation r is r=c/2pi

Answer 1

r = 8

Explanation:

The circumference of a circle is given by :

`C=2\pi r` ...(1)

We need to find the value of r when C = 16π

Solving equation (1)

`r=(C)/(2\pi)\\\\r=(16\pi)/(2\pi)\\\\r=8`

So, the value of r is 8. Hence, the correct option is (b).