Help me solve this problem please

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

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?

See attachment below and find the equivalent of tan(∠qsr)