Which part of the graph best represents the solution set to the system of inequalities y

Select all the expressions that will include a remainder.

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?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6