Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...

Every year on 22 July, math lovers around the world take a moment to celebrate something special—Pi Approximation Day. This day is dedicated to the mathematical constant π (pi), one of the most ...

JACKSONVILLE, Fla. – Tuesday is March 14, also known as National Pi Day. The celebration is based on the first three digits of pi, 3.14. So what exactly is pi, often symbolized as the Greek letter π?

Every year on March 14, math lovers and pie enthusiasts come together to celebrate Pi Day. The date (3/14) matches the famous mathematical constant Pi (3.14), which represents the ratio of a circle’s ...