Arectangle has a width of 9 unitsand a length of 40 units. what' s the length of a diagonal

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

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?