Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...

What you’ll get is a pretty good estimate of the irrational number pi (3.14159...). To celebrate Pi Day this year, here are three ways to estimate pi using random chance that you can try out at home.

Yesterday marked the confluence of round baked goods (sweet and savory), iconic slapstick, the Greek alphabet and the best known and most widely mystifying mathematical constant: “Pi Day.” ...

One of my favorite holidays is Pi Day. On March 14, people who love the math constant called pi celebrate by eating the other kind of pie. Like apple pie, pumpkin pie and even pizza pie. I talked ...