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受欢迎的 Word Problems >

The 周长 of a circle is 12.56 feet. What is the circle's 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 12.56 f ee t . Wha t i s t h e c i rc l e^{'} s a re a ?

解答

a re a : 12.55 f t^{2}

求解步骤

Given:

c i rc u m f ere n ce : 12.56 f t

给定

C i rc u m f ere n ce = 12.56

的圆半径:

r = 1.99898 \dots

给定

r = 1.99898 \dots

的圆面积:

A = 12.55363 \dots

a re a : 12.55 f t^{2}

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