Answer:
Yes,1metre=100centimeters
So their are 60 min in an hour. you multiply 60 min times 6 (hours). you get 360 min. Then you divide that by 90 min and you get 4
Answer it orbits 4 times
hope that helps
It depends on how much the ratio makes but I think it is 72 but not positive but it also might be 6 but that is with additional information