Given the Right Triangle shown in the picture, you can find the missing side length "x" by applying the Pythagorean Theorem. This states that:
Where "c" is the hypotenuse (the longest side), and "a" and "b" are the legs of the Right Triangle.
In this case, you can set up that:
Then, substituting values into the formula and solving for "x", you get:
Hence, the answer is: