Final answer:
To find the length of the side labeled 'x' in a right triangle, use the Pythagorean theorem and the known sides to solve for 'x'. If 'x' is the hypotenuse, the formula x = sqrt(a² + b²) is used.
Step-by-step explanation:
To calculate the length of the missing side labeled 'x' in a right triangle using the Pythagorean theorem, you need to identify the lengths of the other two sides of the triangle. Assuming that 'x' is the adjacent side and you have the lengths of the opposite side and the hypotenuse, you would apply the formula a² + b² = c², where 'a' and 'b' are the lengths of the legs of the triangle and 'c' is the length of the hypotenuse. If 'x' is the hypotenuse, you solve for 'x' using the formula x = √(a² + b²). In the absence of specific values for the other sides, more information is needed to provide a numerical answer.