Why do you think the two empires did not last very long?

Given right triangle xyz, which correctly describes the locations of the sides in relation to

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?