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OpenStudy (anonymous):
The circle formed by the blades of a fan has a circumference of 81 5/7 inches. What is its diameter? Use 22/7 for the radius .
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OpenStudy (anonymous):
The formula for circumference of a circle is 2 * pi * r 2*pi*r = 81 5/7 You can find the radius now. Multiply the radius by two to get the answer.
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