Final answer:
The Pythagorean theorem relates the lengths of the legs of a right triangle to the length of the hypotenuse.
Step-by-step explanation:
The Pythagorean theorem relates the lengths of the legs of a right triangle, labeled a and b, with the hypotenuse, labeled c. The relationship is given by: a² + b² = c². Solving for c, we have c = √(a² + b²).
To solve for d, the diagonal through the box, we need to know the lengths of the sides of the box. Without that information, we cannot determine the value of d.