A circle has a circumference of 16π cm.what is its area?

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A circle has a circumference of 16π cm.what is its area?
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A circle has a circumference of 16π cm.what is its area?
A circle has a circumference of 16π cm.what is its area?

A circle has a circumference of 16π cm.what is its area?
圆的周长为16π 厘米,其面积是多少?
解得半径为8cm,所以面积为64π cm^3