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OpenStudy (kayluh123):
A bike to do tricks with has 20-inch-diameter wheels. Find the area of each wheel. Round to the nearest whole number. (Hint: Use the π key on your calculator and round at the last step. If you do not have such a key, use 22/7 for π and round at the last step.)
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OpenStudy (anonymous):
A=pi times (radius)^2 So, pi*(10)^2=314
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