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GRE Math Challenge #21-ABCD is a square and AED

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GRE Math Challenge #21-ABCD is a square and AED [#permalink] New post 07 Sep 2014, 06:36
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Question Stats:

84% (00:35) correct 15% (01:16) wrong based on 13 sessions
Attachment:
figure 13.jpg
figure 13.jpg [ 13.8 KiB | Viewed 1628 times ]


In figure, ABCD is a square and AED is an equilateral triangle. If AB =2, what is area of shaded region?



A. \(\sqrt{3}\)

B. \(2\)

C. \(3\)

D. \(4 - 2 \sqrt{3}\)

E. \(4 - \sqrt{3}\)
[Reveal] Spoiler: OA

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Re: GRE Math Challenge #21-ABCD is a square and AED [#permalink] New post 16 Jan 2018, 02:07
2*2- (sqrt3*2/2)=4-sqrt3
Re: GRE Math Challenge #21-ABCD is a square and AED   [#permalink] 16 Jan 2018, 02:07
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GRE Math Challenge #21-ABCD is a square and AED

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