[r9etb]

Actually, pi is an abstract ratio.

Huh?!? It's a physically measurable value.

[MHGinTN]

Um, you could measure the radius and the diameter of a circle, but it is the ratio of those two values which nets 'pi' and you cannot write the last digit of pi, unless you've discovered something i'mnot aware of.

Now, using pi in the equation for finding volume of a sperical object, how do you reconcile the fact that as a real gravitation field gets larger, the ratio no longer meets the real volume to surface ratio as calculated with a pi as constant?