an approximation
Think of pi as infinity. It never ends. You might mean "3.14" as an approximation of pi, though.
7/8 is pretty close (less than .1% approximation)
0.3333... (keep going depending on how close an approximation you want).
It means the closest answer that you can come up with.
The approximation wasn't exact, of course, but it was close enough.
Yes, to a very close approximation.
an approximation
an approximation
double and add 10% for a close approximation.
Approximation
Think of pi as infinity. It never ends. You might mean "3.14" as an approximation of pi, though.
~37.6991118431 It would, of course, go on forever, but that's a close approximation.
7/8 is pretty close (less than .1% approximation)
0.3333... (keep going depending on how close an approximation you want).
the fraction 22/7 is a close approximation to 3.14159265
If you mean for wire, the following link has both an exact formula, and a close approximation (with a simpler formula): http://en.wikipedia.org/wiki/American_wire_gauge#Formula