Answer:
To find the length of the third side of a right triangle, you can use the Pythagorean theorem. The theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. So if you have the lengths of the other two sides, you can calculate the length of the third side by taking the square root of the difference between the square of the hypotenuse and the square of one of the other sides.