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# In the figure above, both circles have their centers at point O. Point

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Math Expert
Joined: 02 Sep 2009
Posts: 44412
In the figure above, both circles have their centers at point O. Point [#permalink]

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14 Nov 2017, 23:43
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100% (00:39) correct 0% (00:00) wrong based on 18 sessions

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In the figure above, both circles have their centers at point O. Point A lies on segment OB. If OA = 3 and AB = 2, what is the ratio of the circumference of the smaller circle to the circumference of the larger circle?

(A) 2/3
(B) 3/5
(C) 9/16
(D) 1/2
(E) 4/9

[Reveal] Spoiler:
Attachment:

2017-11-15_1036.png [ 7.29 KiB | Viewed 317 times ]
[Reveal] Spoiler: OA

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Joined: 10 Sep 2015
Posts: 52
Location: India
Concentration: Finance, Human Resources
GMAT 1: 640 Q47 V31
GPA: 4
In the figure above, both circles have their centers at point O. Point [#permalink]

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14 Nov 2017, 23:50
b: 3/5

$$\frac{2\pi3}{2\pi5}$$
In the figure above, both circles have their centers at point O. Point   [#permalink] 14 Nov 2017, 23:50
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