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30 April, 06:14

A wheel has a radius of 15 cm. Approximately how far does it travel in 4 revolutions?

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  1. 30 April, 06:39
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    The circumference is the distance around a circle. In one revolution, the wheel will turn completely around, meaning the wheel has traveled a distance equal to the circumference. So, we need to find the circumference of this wheel. The circumference is equal to 2 times pi times the radius. Rounding pi to 3.14, we get a circumference of about 94.2 cm. Times 4, because we have 4 revolutions, the wheel has traveled about 376.8 cm.

    Answer: about 376.8 cm
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