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# Happy Pi Day. Can You Calculate Pi by Drawing a Circle?

### Via WIRED:

‘…the US is pretty much the only place that uses the middle-endian date format of month/day/year. If you go with the little-endian format of day/month/year, then today is 14/3—which is obviously not pi. (In that case I suggest July 22, since the fraction 7/22 is a fairly decent approximation for pi.)

Anyway, my traditional way of celebrating Pi Day is to find a new way each year of calculating a numerical value for pi. It’s just what I do. I’ve been at this for quite some time now, so here are some of my favorites:

Finding pi using random numbers (and Python)

Determining the value of pi using a mass oscillating on a spring

Actually measuring the circumference and diameter of real circles I have even more Pi Day posts here.

But now let’s try this a new way. Let’s see how close we can get to pi by drawing a circle.

Here’s how this will work. You draw a circle. From that circle, you can determine both the circumference and the radius. Then the value of pi would be the circumference divided by twice the radius. Simple, right?…’