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If ABCD is a square and the area of AFG is 10, then what is the area

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If ABCD is a square and the area of AFG is 10, then what is the area  [#permalink]

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New post 17 Mar 2019, 23:55
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82% (01:25) correct 18% (02:40) wrong based on 11 sessions

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If ABCD is a square and the area of \(∆AFG\) is 10, then what is the area of \(∆AEC\) ?

A. \(5\)

B. \(\frac{10}{\sqrt{2}}\)

C. \(\frac{10}{\sqrt{3}}\)

D. \(10\)

E. \(20\)

Attachment:
#GREpracticequestion If ABCD is a square and the area of.jpg
#GREpracticequestion If ABCD is a square and the area of.jpg [ 29.68 KiB | Viewed 277 times ]

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Re: If ABCD is a square and the area of AFG is 10, then what is the area  [#permalink]

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New post 18 Mar 2019, 01:56
Bunuel wrote:
Image
If ABCD is a square and the area of \(∆AFG\) is 10, then what is the area of \(∆AEC\) ?

A. \(5\)

B. \(\frac{10}{\sqrt{2}}\)

C. \(\frac{10}{\sqrt{3}}\)

D. \(10\)

E. \(20\)

Attachment:
#GREpracticequestion If ABCD is a square and the area of.jpg


I am not sure of the solution , I am getting answer as A ; 5
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Re: If ABCD is a square and the area of AFG is 10, then what is the area  [#permalink]

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New post 27 Mar 2019, 04:20
Bunuel wrote:
Image
If ABCD is a square and the area of \(∆AFG\) is 10, then what is the area of \(∆AEC\) ?

A. \(5\)

B. \(\frac{10}{\sqrt{2}}\)

C. \(\frac{10}{\sqrt{3}}\)

D. \(10\)

E. \(20\)

Attachment:
#GREpracticequestion If ABCD is a square and the area of.jpg


Area of \(\Delta AFG\) = \(\frac{1}{2} * 4 *AB\)=10
So AB ( side of a square ) =5 =AD

Area of \(\Delta AEC\) = \(\frac{1}{2} * 2 *AD\) \(\rightarrow\) \(\frac{1}{2} * 2 *5= 5\)

Ans = 5
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Re: If ABCD is a square and the area of AFG is 10, then what is the area   [#permalink] 27 Mar 2019, 04:20
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