Question

A circle has an area of 64 pi . What is the exact circumference of the circle? Show your work.

Answer 1

C≈28.36

Circle

Solve for circumference

C≈28.36

A Area

64

Using the formulas

A=πr^2

C=2πr

Solving forC

C=2√πA=2·√π·64≈28.35926

Explanation:

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