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受欢迎的 Word Problems >

The 周长 of a circle is 6pi m. What is the area, in square meters? Express your answer in terms of pi.

解答

T h e c i rc u m f ere n ce o f a c i rc l e i s 6 π m . Wha t i s t h e a re a, in s q u a re m e t ers ? E x p ress yo u r an s w er in t er m s o f π .

解答

a re a : 9 π m^{2}

+1

十进制

28.27433 \dots

求解步骤

Given:

c i rc u m f ere n ce : 6 π m

给定

C i rc u m f ere n ce = 6 π

的圆半径:

r = 3

给定

r = 3

的圆面积:

A = 9 π

a re a : 9 π m^{2}

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