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The
value of pi
to 5 decimal places is 3.14159. Pi is an irrational number, so it cannot be expressed as an exact fraction and its decimal representation has no end.

The Greek letter pi was first used to represent the ratio of the circumference of a circle to its diameter in 1709 by mathematician William Jones.

en.wikipedia.org/wiki/Pi

The number π is a

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

Understanding

www.ask.com/youtube?q=Mathematical Pi&v=VWGGTb5pY2U

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Oct 27, 2007 ... Lyrics: A long, long time ago Long before the Super Bowl and things like
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www.mathsisfun.com/numbers/pi.html

circle radius=1, half circumference=

www.mathsisfun.com/definitions/pi.html

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

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

What is