How do you use the Pythagorean theorem to find the unknown side length of a right triangle in a real-world problem?

To use the Pythagorean theorem in a real-world problem, identify the right triangle’s sides: the two legs (a and b) and the hypotenuse (c). Apply the formula a² + b² = c². Solve for the unknown side by rearranging the equation and taking the square root if necessary. For example, in construction, you can determine the length of a ladder needed to reach a certain height by knowing the distance from the wall.

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