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 ...

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

Report Ad. Steven Bogart, a mathematics instructor at Georgia Perimeter College
, provides the following ... In decimal form, the value of pi is approximately 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.mathsisfun.com/numbers/pi.html

circle radius=1, half circumference=pi. Draw a ... pi symbol. Pi (the symbol is the
Greek letter π) is: The ratio of the Circumference ... 314m (to the nearest m) ...

quatr.us/math/geometry/pi.htm

May 2016 - Pi is a number that is approximately equal to 3.14. It is the ... Usually
in math we write pi with the Greek letter π, which is the letter "p" in Greek.

www.piday.org/

Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter “π”)
is the symbol used in mathematics to represent a constant — the ratio of the ...

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.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 ...

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 ...