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受欢迎的 Word Problems >

The 周长 of a circle is 7pi cm. What is the area, in square centimeters? Express your answer in terms of pipi.

解答

T h e c i rc u m f ere n ce o f a c i rc l e i s 7 π c m . Wha t i s t h e a re a, in s q u a re ce n t im e t ers ? E x p ress yo u r an s w er in t er m s o f p iπ .

解答

a re a : 38.48 c m^{2}

求解步骤

Given:

c i rc u m f ere n ce : 7 π c m

给定

C i rc u m f ere n ce = 7 π

的圆半径:

r = 3.5

给定

r = 3.5

的圆面积:

A = 38.48451 \dots

a re a : 38.48 c m^{2}

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