en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to
its diameter, ...... Liu later invented a faster method of calculating π and obtained
a value of 3.14 ...

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 ...

www.angio.net/pi/whypi.html

Why is Pi interesting to understand, compute, and perhaps even to search? ... to
correctly estimate Pi to about two digits (3.14), proving 3.1408 < Pi < 3.1428. ...
Methods to estimate Pi demonstrate several significant advances in mathematics.

www.mathsisfun.com/numbers/pi.html

all the way around the circle) will be Pi. Pi (the symbol is the Greek letter π) is:
The ratio of the ... π × 100m = 314.159...m. = 314m (to the nearest m) ...

www.math.com/tables/constants/pi.htm

Pi is a name given to the ratio of the circumference of a circle to the diameter.
That means, for any circle, you can divide the circumference (the distance around
...

www.quickanddirtytips.com/education/math/314-fun-facts-about-pi

Mar 11, 2016 ... To prepare, today we're going to learn 3.14 fun facts about pi that you can share
with all of your Pi Day friends next year. And we're also going ...

themetapicture.com/3-14-is-pie-backwards/

Jun 6, 2011 ... Funny pictures about 3.14 is PIE backwards. Oh, and cool pics about 3.14 is PIE
backwards. Also, 3.14 is PIE backwards photos.

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

Feb 22, 2012 ... Circumference Of A Circle Using 3.14 For Pi. mrmaisonet ... TeacherTube Math
164,321 views. 7:58 ... Math Antics - Circles, What Is PI?

www.livescience.com/29197-what-is-pi.html

Apr 30, 2013 ... When starting off in math, students are introduced to pi as a value of 3.14 or
3.14159. Though it is an irrational number, some use rational ...

www.thedailybeast.com/articles/2013/03/14/17-facts-to-crack-the-mystery-of-pi.html

Mar 14, 2013 ... Check your calendars: It's Pi Day, the day we bow down to the number 3.14 ... Pi
is officially defined as the ratio of the circumference of a circle to its diameter. ... pi
is the most commonly recognized constant in the math world.