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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, commonly approximated as 3.14159. It has been represented by ...

wonderopolis.org/wonder/what-is-pi

Before we can learn more about

www.ask.com/youtube?q=What Is Pi?&v=wNcFAQHJWAU

Dec 16, 2011 ... (π explained) a brief explanation of the constant Pi Pi =3.14159265... C =
circumference = perimeter D = diameter = line dividing circle in half R..

www.piday.org/million/

One Million Digits of

www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html

100,000 Digits of

mathforum.org/dr.math/faq/faq.pi.html

quatr.us/math/geometry/pi.htm

May 2016 -

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

www.livescience.com/34132-what-makes-pi-special.html

Aug 9, 2012

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

Succinctly,

Answer

Pi, written as Π or π, is the 16th letter in the Greek Alphabet.

More Info

www.mathsisfun.com

Or you could draw a circle with a diameter of 1. Then the circumference (the
distance all the way around the circle) will be

www.piday.org

www.livescience.com

Apr 30, 2013