# What is the circumference of a circle with a radius of 10 cm?

Apr 4, 2018

The circumference of the circle is $20 \pi$ cm or about $62.8$ cm.

Here's how I did it:

#### Explanation:

The formula for a circumference of a circle is $2 \pi r$, where $r$ is the radius. We can plug our known value of the radius ($10$ cm) into the formula and solve.

$2 \pi 10 = 20 \pi$ cm or about $62.8$ cm.

Hope this helps!