Pi

3.14159265

Pi is the ratio of a circle's circumference to its diameter. Pi (π) is also the ratio of a circle’s area to the square of its radius.

Pi is an irrational number that can’t be expressed as a fraction of the form m/n where m and n are both integer numbers. Pi is an example of what’s called a transcendental number.

I love pi[e] more than cake, keep a freezer full of fresh-picked fruit ready to go, and have never been able to make pie crust from scratch like my father. Several childhood chums, including Ros Chrenka & Don Kelley have challenged me to do a Pi crust.

March 14 Pi Day.

By far the best place to learn about pi is to read David Blatner's The Joy of Pi book. Not that his Joy of Pi website ain’t grand in and of itself.

You too can compute pi. Join Background Pi, a distributed computing project. Use your computer’s spare cycles to compute pi.

Want some pi?

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Remember kids, pi is a good source of randomness. That’s why it’s used in the Blowfish encryption algorithm because it’s a “Nothing up my sleeve number”.