Question

the formula for the circumference of a circle is $c = 2pi r$, where $r$ is the radius and $c$ is the circumference. the equation solved for $r$ is $r=\frac{c}{2pi}$. find the radius of a circle that has a circumference of $16pi$. $\bigcirc$ $r = 4$ $\bigcirc$ $r = 8$ $\bigcirc$ $r = 12$ $\bigcirc$ $r = 16$

Explanation:

Step1: Substitute C into the formula

$r = \frac{16\pi}{2\pi}$

Step2: Simplify the expression

$r = \frac{16}{2} = 8$

Answer:

B. $r = 8$