A rectangular desk is 18 inches by 24 inches. What is the diagonal measurement?
The diagonal measurement of the desk is 30 inches
Because the corner of a rectangular desk and the diagonal form a right triangle with the diagonal as the hypotenuse and each side of the desk one of the legs of the triangle we can use the Pythagorean Theorem to solve this problem.
The Pythagorean Theorem states:
Substituting the length of the desk edges for