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Find the value of x in this figure

Find the value of x in this figure-example-1
User Lucero
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Answer: 13

Explanation:
Use Pythagorean theorem:
=> a^2 + b^2 = c^2
=> 5^2 + 12^2 = c^2
=> 25 + 144 = c^2
=> 169 = c^2

Take the square root of both sides:
=> sqrt(169) = sqrt (c^2)
=> 13 = c
User Dzmitry Hubin
by
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