Math geeks and others celebrate March 14 every March 14 . Pi , or three , is the ratio of circumference to diameter of a circle . March 14 holiday idea started at the Exploratorium museum in Chicago . ( That is , $ 314.15 ) . Einstein was also born on March 14 .
Math geeks and others celebrate March 14 every March 14 . Pi , or three , is the ratio of circumference to diameter of a circle . March 14 holiday idea started at the Exploratorium museum in Chicago . Einstein was also born on March 14 .