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## Pi - Wikipedia

en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, .... The set of complex numbers at which exp(z) is equal to one is then an (imaginary) arithm...

## What is pi, and how did it originate? - Scientific American

www.scientificamerican.com/article/what-is-pi-and-how-did-it/

Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14. But pi is an irrational number, meaning that its ...

## Pi - Math is Fun

www.mathsisfun.com/numbers/pi.html

circle radius=1, half circumference=pi ... 314m (to the nearest m) ... In fact π is not equal to the ratio of any two numbers, which makes it an irrational number.

## The Math Dude : 3.14 Fun Facts About Pi :: Quick and Dirty Tips ™

Mar 11, 2016 ... How did you celebrate Pi Day this year? ... By which I mean: Why is pi equal to approximately 3.14? Pi is approximately 3.14 simply because ...

## Where Does 'PI' Come From?

britton.disted.camosun.bc.ca/pi/piorigin/piorigin.html

You know what 'PI' is ... it's a number with the value 3.14, and it's used to find the circumference and area of a circle. But did you ever wonder where PI came ...

## What's the 314th digit of pi? - Quora

www.quora.com/Whats-the-314th-digit-of-pi

May 8, 2015 ... Pi (upto the first 314 digits) is ... Pi (upto the first 314 digits) is 3.14159265358979323846264338327950288419716939 ... Is pi equal to 22/7?

## Pi Day 2016: 3.14 Things to Know About Pi | NBC Southern California

www.nbclosangeles.com/news/national-international/Pi-Day-2016-314-Things-to-Know-Freebies-371966492.html

Mar 14, 2016 ... Monday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its diameter and equals ...

## Pi Day · Celebrate Mathematics on March 14th

www.piday.org/

Pi Day is celebrated on March 14th (3/14) around the world. ... Pi has been calculated to over one trillion digits beyond its decimal point. ... 314-pie-via- zazzle ...

## OMG, OMG, OMG, 3.14 In A Mirror Spells.... - Geekologie

geekologie.com/2010/04/omg-omg-omg-314-in-a-mirror-sp.php

Apr 2, 2010 ... 3.14 in a mirror spells pie! Black magic! Sorcery! Say -- you think whoever invented pi knew that? Because it sounds like some serious Illuminati ...

## 7th Grade Math-Circumference of a circle - MooMooMath

www.moomoomath.com/Circumference.html

Remember the general form of the equation of a circle equals,. (x-h)^2 ... Pi is calculated by dividing the circumference of a circle by the diameter of the same circle. ... What is the radius of a circle with a circumference of 314 units? Step 1.