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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

**History**. Main article: Approximations of π. See also: Chronology of computation
of π.

www.exploratorium.edu/pi/history_of_pi/

A Brief

www.ualr.edu/lasmoller/pi.html

has a long and interesting

www.math.rutgers.edu/~cherlin/History/Papers2000/wilson.html

The

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

A Brief

www-history.mcs.st-and.ac.uk/HistTopics/Pi_through_the_ages.html

And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass ...

www.piday.org/learn-about-pi/

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

Explains what the constant is and a brief

www.amazon.com/A-History-Pi-Petr-Beckmann/dp/0312381859

A

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