To find the length of the unknown side of a right triangle, we usually use the Pythagorean theorem, which states that for a right triangle with legs \( a \) and \( b \) and hypotenuse \( c \):
\[ a^2 + b^2 = c^2 \]
However, you haven't provided any specific lengths for the other sides or which side is unknown. If you could provide the lengths of the other two sides or specify which side you need to find, I would be able to help you calculate the length of the unknown side.