Each Interior Angle = 180 -(360 / # sides)
120 = 180 - (360 / # sides)
(360 / # sides) = 60
# sides = 360 / 60
# sides = 6
3.45 pm this is because if you take 1.15 hours off of 5.00 you get 3.45
4 should be D and 5 the change would be .94
The appropriate unit would be pounds/lbs.