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aleksandr82 [10.1K]
2 years ago
5

Help me with this, it's Pythagorean theorem.

Mathematics
2 answers:
Blizzard [7]2 years ago
6 0

Step-by-step explanation:

Let x represent the missing side length.

By Pythagoras' Theorem,

We have x² + 12² = 13².

Therefore x² = 13² - 12² = 25 and x = 5.

(x = -5 is rejected as side lengths are positive)

ziro4ka [17]2 years ago
4 0

Answer:

Let the required side of the triangle be x

By Pythagoras theorem we get,

x  = \sqrt{ {13}^{2} -  {12}^{2}  } \\   =  \sqrt{169  -  144}   \\ =  \sqrt{25}  \\  =  \sqrt{ {5}^{2} }  \\  = 5

<h3>5 is the right answer.</h3>
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