Question

the diameter of a circle is 16 inches. what is the circumference? give the exact answer in simplest form.

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = \pi d$, where $C$ is the circumference and $d$ is the diameter.

Step2: Substitute diameter value

Given $d = 16$ inches, substitute into the formula: $C=\pi\times16 = 16\pi$ inches.

Answer:

$16\pi$