Add Yahoo as a preferred source to see more of our stories on Google. If those questions are running through your head, keep on reading! Ahead, you'll find everything you need to know about Pi Day.

Anyone who's had to learn math or physics in school may have encountered pi at one point. More popularly known and written out in its Greek lowercase letter counterpart, π, it's essentially the ratio ...

As people celebrate Pi Day this March 14, the mathematical constant continues to be part of everyday life for scientists and ...

This day only comes 'round' once every year!

While the infinite digits of the mathematical symbol pi might intimidate some, students at North Hills Christian School find it to be a reason to celebrate. Pi is the ration of a circle’s ...

Pi is denoted by the Greek letter π. It is a mathematical constant and is approximately equal to 3.14159. It is defined as the ratio of a circle's circumference to its diameter. It was first ...

It's Pi Day, and the world is celebrating more than just the Greek mathematical symbol (π). Retailers and restaurants everywhere have deals today. The folks at Offers.com have provided a list of more ...

It isn't The Pioneer Woman without "pi!" In the baking sense, Ree Drummond is no stranger to the pastry, whether she's whipping up apple pie, pot pie, or Ladd's favorite chocolate pie. One of the best ...