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Phổ biến Word Problems >

The radius of a circle is 20 ft. Find its chu vi in terms of pipi.

Lời Giải

T h e r a d i u s o f a c i rc l e i s 20 f t . F in d i t s c i rc u m f ere n ce in t er m s o f p iπ .

Lời Giải

c i rc u m f ere n ce : 40 π f t

+1

Số thập phân

125.66370 \dots

Các bước giải pháp

Given:

r a d i u s : 20 f t

Chu vi hình tròn đã cho

r = 20 : C = 40 π

c i rc u m f ere n ce : 40 π f t

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