March 14 is celebrated as Pi Day because the date, when written as 3/14, matches the start of the decimal expansion 3.14159… of the most famous mathematical constant. By itself, pi is simply a number, ...

All circles, from onion rings to Saturn’s rings, share a magnificent property: their circumferences stretch about three times longer than their diameters. To be more precise (though still not exact), ...

Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite number with many practical uses. Many ...

Today is Pi Day, a celebration of the ratio of the circumference of a circle. Though the numeric value of Pi (π) actually goes on forever — according to Guinness World Records, the most accurate value ...

We celebrate March 14. But what about Golden Ration Day in early January, or Euler’s number e Day on Feb. 7? A UMBC prof imagines the nerdy possibilities. One mathematical constant describes the ...

A freshly decorated Key Lime pie rests on a counter in a busy bakery kitchen at Michele's Pies, Wednesday, March 13, 2024, in Norwalk, Conn. Math enthusiasts and bakers celebrate Pi Day on March 14 or ...