March 14th is celebrated as Pi Day, in recognition of the mathematical constant π (3.14). Pizza chains like Round Table Pizza, Mountain Mike's Pizza, Papa Murphy's, 7-Eleven, and Papa John's are ...

March 14 is commonly referred to as Pi Day, a day that aims to celebrate the ratio of the circumference of a circle. The number is known as 3.14 or π and can actually go on forever. The most accurate ...

Thursday, March 14, is National Pi Day, a time to celebrate the number that represents the ratio of a circle's circumference to its diameter. The number is known as π, the first letter of the Greek ...

Restaurants nationwide invite everyone to join the Pi Day festivities with special food deals. March 14 is commonly known as Pi Day, popular in math circles. Pi, or 3.14, is the circumference of a ...