It’s Pi Day, Pi Day, gotta get down on Pi Day! Partyin’ partyin’ YEAH! *record scratch*

Oh…

I didn’t see you there…

Weeeeeeeelllllll this is embarrassing…

Since you’re here, I guess I’ll go ahead and give you the obligatory post about Pi Day since I am a Math teacher after all.

What is Pi?

Pi is an irrational number, that means it has a decimal sequence that goes on forever without a repeating pattern. Since it never has a repeating pattern, and continues on forever, it’s impossible to find the exact value for Pi. Most people are taught to use 3.14 as an estimate, which is why today March 14 is considered Pi day, unless you’re European, then today is 14 March and it doesn’t really work out…

ANYWAY Pi isn’t actually 3.14 and it’s not 3 and it’s really not 22/7 and it is NEVER the square root of 10 (lookin’ at you Dad!!!!).

To find the exact value of Pi, you have to take the circumference of a circle and divide it by the diameter.

Or you could take the area of a circle and divide it by the radius squared.

Or you could take the volume of a sphere and multiply it by 3/4 and then divide by the radius cubed.

Or you could use cylinders and cone and their volume and surface area but I don’t feel like typing those out…

Pretty much you have to have a circle to find pi!

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