Answer
a) $48\pi$ m
b) 75.4 m
Work Step by Step
a) Use the formula for the circumference of a circle.
$C=2\pi r$
Substitute the given radius for r.
$C=2\pi(24)=48\pi$
b) Use the formula for the circumference of a circle.
$C=\pi d$
Substitute the given diameter for d.
$C=\pi(24)$
Use a calculator to find the circumference.
$C=75.4$
