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受欢迎的 Word Problems >

The radius of a circle is 13 cm. Find its 周长 in terms of pipi.

解答

T h e r a d i u s o f a c i rc l e i s 13 c m . F in d i t s c i rc u m f ere n ce in t er m s o f p iπ .

解答

c i rc u m f ere n ce : 26 π c m

+1

十进制

81.68140 \dots

求解步骤

Given:

r a d i u s : 13 c m

给定

r = 13

的圆周长:

C = 26 π

c i rc u m f ere n ce : 26 π c m

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