Apple the Pythagorean theorem to find the unknown side length in the given triangle. Round your answer to the nearest tenth.
In order to use the Pythagorean theorem, we need to have a right triangle - a triangle with one angle of 90 degrees. This theorem states that 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.
Without the specific triangle and its side lengths, it's not possible to calculate the unknown side length. Could you please provide the lengths of the other two sides?