One common association of those digits with PI is the handy approximation of 22/7 accurate to three digits, off by just over .0004. I stress that this is an ap

One common association of those digits with PI is the handy approximation of 22/7 accurate to three digits, off by just over .0004. I stress that this is an approximation only! I had to explain about PI being irrational rather than exactly equal to the shortcut approximation to a couple co-workers, explaining some poor behaviors in their rotation function.