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受欢迎的 Word Problems >

The area of a circle is 16pi ft^2. What is the 周长, in inches? Express your answer in terms of pipi.

解答

T h e a re a o f a c i rc l e i s 16 π f t^{2} . Wha t i s t h e c i rc u m f ere n ce, in in c h es ? E x p ress yo u r an s w er in t er m s o f p iπ .

解答

c i rc u m f ere n ce : 8 π f t

+1

十进制

25.13274 \dots

求解步骤

Given:

a re a : 16 π f t^{2}

给定

A re a = 16 π

的圆半径:

r = 4

给定

r = 4

的圆周长:

C = 8 π

c i rc u m f ere n ce : 8 π f t

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