$2.40 for 3 watermelons

A(t)=728(1+0.04)^t how much money did aditya originally invest

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?

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?