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In the figure above, the shaded rectangular portion of the square regi

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In the figure above, the shaded rectangular portion of the square regi [#permalink]

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New post 10 Oct 2017, 23:31
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In the figure above, the shaded rectangular portion of the square region has perimeter 20. What is the perimeter of the unshaded portion?

(A) 28
(B) 34
(C) 36
(D) 40
(E) 68

[Reveal] Spoiler:
Attachment:
2017-10-11_1126.png
2017-10-11_1126.png [ 1.25 KiB | Viewed 488 times ]
[Reveal] Spoiler: OA

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Re: In the figure above, the shaded rectangular portion of the square regi [#permalink]

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New post 11 Oct 2017, 00:08
Perimeter of the shaded rectangle = 2(l+b)=2(l+2)=20
l+2=10
l=8
Side of square = 8
In the unshaded portion, breadth = 8-2=6
Perimeter of unshaded portion = 2(8+6) = 28
Answer A.
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Re: In the figure above, the shaded rectangular portion of the square regi [#permalink]

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New post 11 Oct 2017, 09:36
Bunuel wrote:
Image
In the figure above, the shaded rectangular portion of the square region has perimeter 20. What is the perimeter of the unshaded portion?

(A) 28
(B) 34
(C) 36
(D) 40
(E) 68

[Reveal] Spoiler:
Attachment:
2017-10-11_1126.png


Length of rectangle = 8
Side of square = 8
Perimeter of square = 8*4 = 32

perimeter of the unshaded portion = 32 - 2*2 = 28

Answer A
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Re: In the figure above, the shaded rectangular portion of the square regi   [#permalink] 11 Oct 2017, 09:36
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