I can't explain now becase y keyboard is broken... I spilled beer on it... will write ore next week on this.
A 25,000 mi circumference East to West 360 degrees would neccessitate the same around North to South to North again, 360 Degrees.Circumference on a globe is assumed to be translated to the same miles from South rim to N pole to South rim, 25,000 miles-- on a flat earth projection.
(note: If Circumference is not 25,000-- then change that number to what is thought to be more accurate. Test distance for euqidistant latitude lines anywhere, say from 30N to 30S, or 60 degrees and multiply by 6 for example. If yo think circumference is 12,500 and radius 6,250 then apply numbers to Pythag. thm below.
So... using "standard" numbers, radius on flat earth 1/2 of 25,000 or 12,500. If that's the case then....
Rim circumference is 74,000 miles as determined below using Pythagorean theorum.
