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# Right triangle

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Manager
Joined: 16 Apr 2009
Posts: 232

Kudos [?]: 101 [0], given: 10

Schools: Ross

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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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Keep trying no matter how hard it seems, it will get easier.

Kudos [?]: 101 [0], given: 10

Senior Manager
Joined: 25 Mar 2009
Posts: 300

Kudos [?]: 270 [0], given: 6

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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)

Kudos [?]: 270 [0], given: 6

Manager
Joined: 16 Apr 2009
Posts: 232

Kudos [?]: 101 [0], given: 10

Schools: Ross

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15 Jul 2009, 18:54
_________________

Keep trying no matter how hard it seems, it will get easier.

Kudos [?]: 101 [0], given: 10

Re: Right triangle   [#permalink] 15 Jul 2009, 18:54
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