pen rainbow

Monday, March 14, 2016

Monday—Rounded Up Pi Day 31416

 It's a math holiday!

happy rounded up pi day

Start with a circle.
My pie looks like it's oblong, but it's really a 9" round pie.

Pi is the distance around a circle divided by the distance through its center.
This means that the circumference is slightly more than 3 times (3.14)
as long as its diameter.  It's a mathematical constant.

What's so special about this year's Pi Day?

Pi is the number 3.14159 to the fifth decimal place.  Rounded up to the fourth decimal, it's 3.1416, the same numeric sequence as today's date.  

For number geeks and calendar date nerds, this is a cool occurrence + it happens only once every hundred years.

The relationship holds, no matter what the size is of the circle.  The round iris of your eye and a planet's equator both yield a ratio of pi.  

Here's pi in your eye.  :)

In 2009, the U.S. Congress declared March 14 as Pi Day in a vote of 391 to 10 (H.RES.224).  The 10 congressmen who voted against the bill:
Dean Heller (R-NV)
Jeff Flake (R-AZ)
Jeff Miller (R-FL)
Timothy Johnson (R-IL)
Mike Pence (R-IN)
Bill Shuster (R-PA)
Ted Poe (R-TX)
Ron Paul (R-TX)
Randy Neugebauer (R-TX)
Jason Chaffetz (R-UT)

Pi has been calculated out to 13.3 trillion decimal places.  It never repeats.  

MIT releases its admissions decisions every year on March 14.  In 2015, future freshman were notified at 9:26 a.m. EST (3.1415926).

• celebrate • learning •