INDIANAPOLIS -- March 14 -- or, if you'd prefer, 3.14 -- is the informal holiday celebrating everyone's favorite irrational number, pi. The ratio of a circle's circumference to its diameter, pi is a ...
Monday, March 14 is National Pi Day, the annual celebration of the mathematical constant Pi — which is approximately equivalent to 3.14. Pi is the ratio of a circle’s circumference to its diameter but ...