26.
Explanation:
To figure out the missing side of a right triangle, we will use the Pythagorean theorem. This is...

With this Pythagorean theorem, a and b will always be the legs and the c will always be the hypotenuse, no matter what. Now knowing this, we can plug the legs into the equation.


Add the legs together.

Now, since c is squared we will have to find the square root of 676.

= 26