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Circumference Question

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by Touseef » Wed Aug 10, 2011 5:26 am
16n
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by STI-R » Wed Aug 10, 2011 5:30 am
Touseef wrote:16n
Thanks for the answer, but could you explain how you got it?
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by Touseef » Wed Aug 10, 2011 5:38 am
Circumference of Circle=2*pi*r

3/4(2*pi*r)=12n(According to Question)

So,(2*pi*r)=12n*4/3=16n.

But what are the answer options?
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by STI-R » Wed Aug 10, 2011 5:49 am
Touseef wrote:Circumference of Circle=2*pi*r

3/4(2*pi*r)=12n(According to Question)

So,(2*pi*r)=12n*4/3=16n.

But what are the answer options?
It was a part of a question on the Kaplan GMAT text book. I was confused on how they got the answer to 16Ï€.
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