Posted 3/29/2008 10:50 (#344636 - in reply to #344355) Subject: RE: some things I've noticed since started using GPS
Cedar Rapids, Iowa
The mathematical formula commonly used to calculate distance between two points requires knowing what diameter the earth is. I'll save you from the technical details, but essentially the elevation you're at will effect acres. That said, the difference between sea level and 5000 feet above sea level is probably less than 1%.
some things I've noticed since started using GPS
