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OpenStudy (the_puppet1):
A circle has a diameter of 22 centimeters. What is the area of the circle? ___ pi cm^2
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OpenStudy (beepbeepimajeep):
121 the formula for area of a circle is Pi R^2
OpenStudy (beepbeepimajeep):
so " pi cm^2" is the format for you answer
OpenStudy (beepbeepimajeep):
34.54^2 or 121
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