Help again please how do you figure this out

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?

Arectangle has a perimeter of 24 inches. if the width is 5 more than twice the length, what are the dimensions of the rectangle?

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.