What is the product of 2.4 x 103 and 1.5 x 103?

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?

Keith runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.