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Mathematics 18 Online
OpenStudy (anonymous):

What is the exact circumference of the circle? A. 10π feet B. 20π feet C. 40π feet D. 60π feet

OpenStudy (anonymous):

What is the diameter or radius?

OpenStudy (anonymous):

OpenStudy (anonymous):

\[C=2\Pi r\]the radius for this circle is 10, so simply substitute 10 in for r to get 20pi

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