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Find the exact circumference of a circle with the given radius. 5 inches C = 2.5π in. 10π in. 25π in.

1 Answer

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The circumference, C, of a given circle may be calculated through the equation,

C = 2πr

where r is the radius.

Substituting the known values from the given in this item,
C = 2(π)(5 in)
C = 10π in

Thus, the answer is this item is the second choice.
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