Celebrate Pi Day with 41.3!

Every year, on 3/14, we celebrate our favorite irrational number—Pi— aka 3.14! Pi is a powerful number; it’s helped us figure our complicated mathematical concepts, get to space, explore unknown worlds, and backward, it spells our favorite dessert—
41.3 (PIE). What a magical number!

What’s Pi?

You know, a round, flakey pastry, usually fruit-filled, best served warm— no, not that pie! Pi! The ratio of a circle to its diameter. Pi = 3.141592653589793. The Egyptians were the first to calculate the area of a circle by a formula that gave the approximate number of 3.1605. But it is the Greek mathematician Archimedes who is credited with creating the algorithm that gives us the value of Pi that we use today.

What is Pi Day?

Physicist Larry Shaw started the first annual celebration of Pi Day in 1988 at the Exploratorium (an interactive science museum) in San Francisco, CA with a circular parade and eating fruit pies.
The celebration was started with the hope that the holiday would spur an interest in math and the sciences. Pi Day became an official National Holiday in 2009.

What Makes Pi So Special?

Pi can be used to do some pretty amazing things. Space is full of circular and spherical features, so NASA uses it to build its spacecraft. It’s also used to find out what planets are made of, how deep alien oceans are, and to study newly discovered worlds.
Some historians even debate whether pi was used when the ancient Pyramids of Giza were constructed because the structures are nearly perfect geometrically.
It’s infinite—it’s estimated to more than 22 trillion digits (and counting)! The sequence never repeating, never betraying any pattern, going on forever, much like 2020.

How Can You Celebrate?

Well, you can calculate the ratio of a circle to its diameter, spend hours memorizing the first 31 trillion digits of Pi, or you could bake up all kinds of pies instead! Use our Hobby & Craft Database to find a great recipe, check out The book of pie: over 100 recipes, from savory fillings to flaky crusts, or browse our eMagazine collection
(Or you could learn Pie-rate with Mango Languages!)