Perimeter is , or around 63.89 in.
If you meant that the area was 225 in²:
Perimeter is 60 in
It would take 2.25 minutes to complete 3 laps because each lap takes .75 minutes.
X - hours that passed after 10 pm
(x+1) 36 = x * 42 | / 6
(x+1)6 = 7x
6x+6 = 7x |-6x
x=6
They will travel same distance at 4 am.
5578/68=82.029411764705882352941176470588
that would be rounded to 82.02 which is the answer