In grade school, they taught us to use 22/7 for pi. Unfortunately, that led some people to believe that PI == 22/7. It's even more fun when state legislators t

In grade school, they taught us to use 22/7 for pi. Unfortunately, that led some people to believe that PI == 22/7. It's even more fun when state legislators try to define pi. http://www.straightdope.com/columns/read/805/did-a-state-legislature-once-pass-a-law-saying-pi-equals-3 http://www.straightdope.com/columns/read/805/did-a-state-leg...