How do you get the center to center distance of a flange?

This is called a radius, or so I have been told... Hope this helped! :-)

I believe that the center of mass changes as the moon and the sun move to relatively different positions. The earth does wobble as a result.

384,403 km

12 inches standard, 10 & 14 works, need to specify 10,12, or 14 when buying toilet.

radius