Question

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the radius of a circle is 7 inches. what is the circumference?
$r=7$ in
give the exact answer in simplest form.
_______ inches

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 radius value

Substitute $r=7$ into the formula:
$C = 2\pi \times 7$

Step3: Simplify the expression

Calculate the product of 2 and 7:
$C = 14\pi$

Answer:

$14\pi$ inches