circle A has an area of 254.469 square units. What is the circumference of circle A? Round your answer to the nearest hundredth, if necessary.

asked May 5, 2017 170k views

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6 votes

C=2πr
when area is given use this formulae C=2 sqrt (πA)=56.55
hope this helps

Mike answered May 8, 2017

by Mike

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4 votes

A = r² π
254.469 = r² π
r² = 254.469 : 3.14159
r² = 81.00866
r = 9.0048
C = 2 r π = 2 * 9.0048 * 3.14159 = 56.55 units

Dmitri Farkov answered May 11, 2017

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