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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

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

Regardless of the circle's size, this ratio will always

www.mathsisfun.com/numbers/pi.html

all the way around the circle) will be

www.irisreading.com/happy-pi-day-314/

Mar 14, 2014

www.ask.com/youtube?q=Why Is Pie Equal 314&v=_X0e7f4qJoA

Feb 22, 2012 ... Circumference Of A Circle Using 3.14 For Pi . mrmaisonet ... Math Antics - Circles,
What Is PI ? ... What is Pi and Proof that it equals 3.14159265.

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

Apr 2, 2010

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

Mar 14, 2016

project314.org/314/ancient-pi

For example, a Babylonian clay tablet (~1900-1600 BC) implies a value of 25 / 8,
which is

www.acc.umu.se/~olletg/pi/PiFactsMarcUmile.doc

Jan 4, 2012

math.stackexchange.com/questions/1880/why-is-22-7-a-better-approximation-for-pi-than-3-14

Aug 9, 2010

More Info

www.quickanddirtytips.com

Mar 11, 2016

www.piday.org

One Million Digits of

www.inner.org

Feb 26, 2014