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We can use the Pythagorean theorem to find the hypotenuse: $a^2 + b^2 = c^2$, where $a$ and $b$ are the legs of the triangle and $c$ is the hypotenuse.
In this case, $a = 7$ and $b = \sqrt{2}$. Substituting these values into the Pythagorean theorem, we
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