I assume you mean 0.00875 miles.
The time required is 0.0035 hours = 0.21 minutes = 12.6 seconds (approx).
1 hour and 12 minutes
90 hours.
Four hours.
3.46 mph
It will take 3 hours.
225/3 = 75 hours of walking
That depends on your walking speed.The formula is:Time it takeshours = 0.56 / (your walking speed, miles per hour) . Walking speeds range from 2.0 miles per hour (casual strolling while smelling the flowers)to about 9.6 miles per hour (Olympic record, 20 Km racewalk).For 0.56 mile . . .1 mph . . . . . 33min 36sec2 mph . . . . . 16min 48sec3 mph . . . . . 11min 12sec4 mph . . . . . . 8min 24sec
6.316 mph
2.0 miles in 1 hour (this is the meaning of 2.0 mph) Hence 1.0 mile will take 1/2 hour
3 mph
3.1 mph
1.75 miles.