Find the volume of the cylinder in terms of pi

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 graph depicts the path of a projectile

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i