What is "Pi&quo Posted on July 6, 2015July 6, 2007 by admin Mathematician: Pi is the number expressing the relationship between the circumference of a circle and its diameter.Physicist: Pi is 3.1415927 plus or minus 0.00000005Engineer: Pi is about 3. Spread the love Related posts: Japanese Cars A book never written Turning it off La profesora de una escuela