# What is the radius of a circle with a circumference of 8?

Mar 5, 2018

Radius $= \frac{4}{\pi}$

#### Explanation:

The cirumference $\left(C\right)$ of a circle with radius $r$ is given by:
$C = 2 \pi r$

Hence, in this example: $8 = 2 \pi r$

$\therefore r = \frac{8}{2 \pi} = \frac{4}{\pi}$