Do all NFL football fields face the same direction?
Yes. All fields run North and South.
If you made another compass with the same materials would the needle point be in the same direction?
Translation is a transformation that "slides" an object in a fixed distance and in a given direction. The original object and its translation have the same shape and size, and they face in the same direction. An example of translation in architecture would be the stadium setting. The seats are the same size and shape and face in the same direction.
The answer is 17.6 football fields using 5280 ft(1 mi.) divided by 300. Of course this number will be a bit less if you accounted for the size of the endzones at each end of the field. If you account for the endzones, the answer is 14.666 football fields. Using the same 5280 ft in a mile divided by 360 ft. The endzones are 10 yds(30ft) each.