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# pentagon

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pentagon [#permalink]  15 Jun 2018, 15:14
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Question Stats:

100% (00:39) correct 0% (00:00) wrong based on 6 sessions
Attachment:

pentagon.jpg [ 7.3 KiB | Viewed 224 times ]

What is the perimeter of the pentagon above?

A. 21

B. 26

C. 28

D. 31

E. 41
[Reveal] Spoiler: OA

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Re: pentagon [#permalink]  16 Jun 2018, 06:55
Carcass wrote:
Attachment:
pentagon.jpg

What is the perimeter of the pentagon above?

A. 21

B. 26

C. 28

D. 31

E. 41

We can clearly get a right angled triangle, at sides 3 and 4 we have right angle then thrid side will be 5.

Join the lines, we'll a rectangle, since two with perpendicular lines have 90, then two sides have 7 as length then fourth side will be 5.

So perimeter is 7+3+4+7+5 = 26.

B.
Re: pentagon   [#permalink] 16 Jun 2018, 06:55
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