Answer :
If the equator is a perfect circle and its diameter is 7,912 miles, then
its circumference is 7,912 (pi) miles.
We call a circle 360 degrees. So the length of one degree on the equator is
(7,912 pi) / 360 = 69.045... miles (rounded)
its circumference is 7,912 (pi) miles.
We call a circle 360 degrees. So the length of one degree on the equator is
(7,912 pi) / 360 = 69.045... miles (rounded)