A nice piece of PI

When doing calculations for area, volume, etc. for Piping (or other round objects), it is often necessary to include the value for PI...

3.14159 is as far as I usually go - but sometimes we want to go crazy, right?

3.14159265358979323846264338327950288419716939937510...

So how can you get the full value of PI without typing out the full number?

Easy! Just use: 4*Atn(1)

Wala!