Pi is a special number — so special, in fact, that most laypeople are probably aware of it, even if only as a relic of bygone classroom lectures or geometry textbooks. Represented in abbreviated ...

Pi shows up everywhere, from particle physics to sacred geometry. But why? In honor of Pi Day—March 14—let's examine the history of this fascinating number. As a concept, pi has been in use ...

The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate the length of the arc, we need to know what fraction of the circle is shown.

Fortnite’s Creative mode has become a hub for player-generated content, and a Pi Day event could inspire an entirely new category of mathematical creations. Players could design pi-themed obstacle ...