Suppose the circumference of a circle is $6pi$ . What is its radius?

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Answer 1 · 2017-02-17T20:19:40

See explanation.

The circumference of a circle can be calculated using:

$C=2pixxr$

From the above formula the radius can be calculated as:

$r=C/(2pi)$

So in this situation we have:

$r=(6pi)/(2pi)=3$