en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to
its diameter, commonly approximated as 3.14159. It has been represented by ...

www.math.utah.edu/~pa/math/pi.html

Understanding Mathematics by Peter Alfeld, Department of Mathematics, ... pi=
3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 ...

www.piday.org/million/

Pi Day. Celebrate Mathematics on March 14th. 96 Days 17 Hours ... One Million
Digits of Pi ... Digits: New Pi Calculation Record Set ... Pi Sightings: Pi Pie Pan.

quatr.us/math/geometry/pi.htm

Usually in math we write pi with the Greek letter π, which is the letter "p" in Greek.
You pronounce it "pie", like apple pie. It is called pi because π is the first letter ...

www.mathopenref.com/pi.html

The number Pi, denoted by the Greek letter π - pronounced 'pie', is one of the
most common constants in all of mathematics. It is the circumference of any circle,
...

mathworld.wolfram.com/PiFormulas.html

th term of this series in the Gregory series is larger than (2n)^(-1) so this sum
converges so slowly that 300 terms are not sufficient to calculate pi correctly to
two ...

www.ask.com/youtube?q=Math Pie&v=VWGGTb5pY2U

Mar 27, 2010 ... O boy iz dat tiem of yeer agin!!111!! This is a music video of the song "
Mathematical Pi" by Ken Ferrier and Antoni Chan. You can find out more ...

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

Apr 30, 2013 ... Pi (π), the 16th letter of the Greek alphabet, is used to represent the most widely
known mathematical constant. By definition, pi is the ratio of the ...

encyclopedia2.thefreedictionary.com/Pie (math)

pi,. in mathematics, the ratio of the circumference of a circle to its diameter. The
symbol for pi is π. The ratio is the same for all circles and is approximately 3.1416
...

www.reference.com/math/pi-math-9717f37c9ce7dba8

Pi is a mathematical constant and irrational number representing the ratio of a
circle's circumference to its diameter with a value of approximately 3.1416.