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OpenStudy (anonymous):
The circumference of a circle is 60pi cm. What is the diameter of the circle?
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OpenStudy (anonymous):
circumference = 2πr, where r is the radius so 60π cm = 2πr 60π cm/2π = r 30 cm = r diameter = 2r = 2*30 cm = 60cm
OpenStudy (anonymous):
pi*d=circumference therefore the diameter is 60cm
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