Question

the radius of a circle is 8 kilometers. what is the circumference? r = 8 km give the exact answer in simplest form. kilometers

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = 2\pi r$, where $r$ is the radius.

Step2: Substitute the radius value

Given $r = 8$ km, substitute into the formula: $C=2\pi\times8$.

Step3: Simplify the expression

$C = 16\pi$ km.

Answer:

$16\pi$ km