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Mathematics 21 Online
OpenStudy (anonymous):

A circle has a diameter of 15 feet. What is the circumference of the circle? (Express your answer using π.)

OpenStudy (anonymous):

Recall that the circumference of a circle is given by\[2\pi r\]where r is the radius of the circle, and the radius of a circle is found by taking half of the diameter, that should be enough for you to finish the problem.

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