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Right triangle

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Right triangle [#permalink] New post 14 Jul 2009, 14:18
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What is the length around the exterior of a right triangle with sides 9,10, and x?
[Reveal] Spoiler:
19+ sq rt 181

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Re: Right triangle [#permalink] New post 14 Jul 2009, 14:25
The solution to the problem assumes the sides given are the LEGS of the triangle, not the hypotenuse. Use Pythagorean Theorem to solve for the hypotenuse, c:

9^2 + 10^2 = c^2
c = \sqrt{181}

Perimeter = 9 + 10 + sqrt(181)
Senior Manager
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Schools: Ross
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Re: Right triangle [#permalink] New post 15 Jul 2009, 18:54
Thanks for the reply..
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Re: Right triangle   [#permalink] 15 Jul 2009, 18:54
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