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# The circumference of circle X is 24π. If the radius of circle Y is equ

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Math Expert
Joined: 02 Sep 2009
Posts: 55150
The circumference of circle X is 24π. If the radius of circle Y is equ  [#permalink]

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26 Nov 2018, 23:26
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Difficulty:

25% (medium)

Question Stats:

85% (01:14) correct 15% (01:14) wrong based on 26 sessions

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The circumference of circle X is 24π. If the radius of circle Y is equal to 1/12 of the circumference of circle X, what is the circumference of circle Y ?

A. π
B. 2π
C. 2π^2
D. 4π^2
E. 2π^3

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Re: The circumference of circle X is 24π. If the radius of circle Y is equ  [#permalink]

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27 Nov 2018, 08:13
Bunuel wrote:
The circumference of circle X is 24π. If the radius of circle Y is equal to 1/12 of the circumference of circle X, what is the circumference of circle Y ?

A. π
B. 2π
C. 2π^2
D. 4π^2
E. 2π^3

y radius= (1/12 ) * 24 pi

circumference of y = 2pi * 2 pi
= option D 4pi^2
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Re: The circumference of circle X is 24π. If the radius of circle Y is equ   [#permalink] 27 Nov 2018, 08:13
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