SAT Circles Practice Question 13 (Easy)

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Question bank / Circles

Math · Geometry and TrigonometryEasy

A circle has a diameter of $14$ centimeters. What is the circumference, in centimeters, of the circle?

$7\pi$

$14\pi$

$28\pi$

$49\pi$

Show answer and explanation

Answer: B

The circumference of a circle is $\pi d$ . With $d = 14$ , the circumference is $14\pi$ centimeters.

Choice C uses $14$ as the radius in $2\pi r$ , but $14$ is the diameter.

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