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受欢迎的 Word Problems >

The 周长 of a circle is 9pi cm. What is the area

解答

T h e c i rc u m f ere n ce o f a c i rc l e i s 9 π c m . Wha t i s t h e a re a

解答

a re a : 63.62 c m^{2}

求解步骤

Given:

c i rc u m f ere n ce : 9 π c m

给定

C i rc u m f ere n ce = 9 π

的圆半径:

r = 4.5

给定

r = 4.5

的圆面积:

A = 63.61725 \dots

a re a : 63.62 c m^{2}

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