SOLUTION: What is the circumference of a circle if the radius is 64pi?

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Question 34867: What is the circumference of a circle if the radius is 64pi?
Answer by usyim88hk(157) About Me  (Show Source):
You can put this solution on YOUR website!
The forumla of the circumference of a circle is
C = 2 x pi x r
where C is circumference, r is the radius
So the circumference is 2 times pi times 64pi whcih is equal to 128(pi)^2