InfraBlue wrote:So, what's the value for the ratio of circumference to diameter of a circle drawn on a spherical surface, or does it vary?
Assuming a perfect circle drawn on the surface of a perfect sphere, that would be 4 π (r²)
where π is the ratio of circumference to diameter of a circle, 3.14159... etc. (pi) to whatever precision you wish, and r is the radius of the sphere on which the circle is described. The only independent variable would be the desired precison of pi.