If the radius of a circle is 6 inches, what is the circumference?

Apr 6, 2018

$C = 12 \pi$ in

Explanation:

$C = 2 \pi r .$ Given $r = 6$,

$C = 2 \pi \left(6\right) = 12 \pi$ in

Apr 6, 2018

$12 \pi$ inches or about $37.699$ inches

Here's how I did it:

Explanation:

The formula for the circumference of a circle is $2 \pi r$.

We know that the radius is $6$ inches, so we can plug that into the formula:
$2 \pi \left(6\right)$

Now multiply the $2$ with the $6$:
$12 \pi$ inches or about $37.699$ inches (when we multiply the $12$ with $\pi$)

Hope this helps!