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# March 14 – 3.14159 ways to celebrate Pi Day

Published March 17, 2017   |
arvindl

Pi (π) might be an irrational number, but you don’t have to be crazy to celebrate it. You finally have permission to commemorate your favorite number, as March 14th is international Pi Day. On 3/14, which sort of looks like 3.14 or the first three digits of pi, mathletes finally have something other than The Big Band Theory to get excited about, while the rest of world focuses on March Madness and Spring Break.

Sure it’s just a number, but it’s a pretty big deal. It represents the ratio of circumference to diameter of every single circle in the world, no matter how big or small it is. By virtue of being irrational, it’s also a transcendental number, which means it can’t be the root of an integer polynomial equation with rational coefficients. Pi isn’t the only irrational, transcendental number to exist in the world, but it is the only one to have its own special day.

3.141592653… and the decimals keep going. That’s because pi is an irrational number that can’t be expressed in 3 integers or fewer, which is just a fancy way of saying these decimals go on infinitely. Yes, we really mean infinitely—just ask Akira Haraguchi, an engineer from Japan. He holds the world record for reciting the most digits of pi. The feat took him 16 hours and spanned 111,700 digits.

That’s certainly one way to celebrate the day, but we’re willing to bet most people don’t want to spend their time reciting numbers. So the question remains: how will you celebrate this iconic mathematical symbol? Maybe you’ll co-opt Dick Solomon’s rousing chant, sine Cosine, Cosine Sine; 3.14159. If you’d rather not confuse people with random outbursts of pi decimals, we suggest you try the following pi-related activities and accessories to celebrate the day.

## Bake a Pie

It’s obvious, isn’t it? Pi is a homophone of pie, so why not embrace your inner baker and spend some time in the kitchen. Go savory with a steak and Guinness pie, or indulge your sweet tooth with a pecan pie. But don’t worry if you’re hopeless in the kitchen. Your local bakery will be there to help you out, and you can always pick up the phone to order a pizza. We say it counts — same with anything else that’s round.

## Listen to Kate Bush’s π

Prog-rocker queen, Kate Bush, sang an ode to the number on her 8th studio album, Aerial. The chanteuse sings about a man with a “complete infatuation with the calculation of Pi”. While this unnamed man loves his numbers, unfortunately, Kate doesn’t share the same interest. When she goes onto sing the number, she only gets to its 78th decimal before skipping to the 101st. It’s not perfect, but it’s the only song in the world that puts π to music.

## Walk, run, or bike 3.14 miles

You’re going to want to burn off some energy after all of those pies. Don your running shoes or slap on your helmet and take to the roads this March. To keep your moment of exercise in tune with the day, try to get as close to π on your run as possible.