All This Is That: What Is Pi Good For? The Answer Is Sitting On Your Shoulders

Tuesday, December 13, 2005

What Is Pi Good For? The Answer Is Sitting On Your Shoulders

I've waited over fifty years to find out the answer to the question "What is Pi [1] good for?" I found out today when I was trying to figure out my hat size (somewhere between 7 3/4 and 7 7/8). Huge.

One of the common methods of calculating hat size (aside from looking at a chart) is to divide the circumference of your head by Pi!

1. Measure the circumference of your head across the forehead, an inch above your eyebrows and just below the curve of the skull in back.
2. Divide the result by Pi (3.14159).
3. Convert that number to the nearest eighth. This is your hat size.

[1] A transcendental number (approximately 3.14159), Pi is the ratio of the circumference to the diameter of a circle and is a constant in many mathematical expressions.

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