So here we have pi squared, which an engineer would call “10.” *-Frank King*

It’s Pi Day today in the United States: March 14th, or as we write it, 3/14. (Don’t know how you do it in Europe, where there *is no* 31st of April.) So, let’s start things off with a song for the day: Cab Calloway‘s “Everybody Eats When They Come To My House.”

(Even Google gets in on the Pi Day action.) Most people know Archimedes’ 22/7 as a good approximation (it will get you 3.14); my favorite is 355/113, which gets you the first *seven* digits, and is the best fractional approximation of pi with a denominator under 10,000!

Over here at scienceblogs, there is a **Pie** contest for Pi Day!

Unfortunately for us all, despite the fact that I love to cook, pie crusts from scratch are out of my league as a baker. So, at my house today — this Pi Day — we’re having an alternative celebration to pie.

To all my old college roommates who might still be reading this, the answer is **yes**. I’m still baking cookies, and they’re still delicious. And I hope your Pi day is filled with delicious circles, too!