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Web Results

en.wikipedia.org/wiki/Pi

Some approximations

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

100,000 Digits

mathforum.org/isaac/problems/pi1.html

Historians estimate that by 2000 B.C. humans had noticed that the ratio of circumference to diameter was the same for all circles. This discovery hinged on the ...

www.piday.org/million/

One Million Digits

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

They used this method to find that

www.wired.com/2015/03/area-circle-value-pi/

Mar 14, 2015

nrich.maths.org/2490

Read all about the number

www.telegraph.co.uk/news/worldnews/asia/japan/8834265/Japanese-mathematician-breaks-record-for-determining-the-value-of-pi.html

Oct 18, 2011

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

Apr 30, 2013

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

Answer

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.

More Info

c2.com

Seriously, it does make sense to define "pi" as a defined constant - not .... That's
why we say that

www.scientificamerican.com

Mar 14, 2016

www.math.com

Pi is a name given to the ratio of the circumference of a circle to the diameter. ...
the needle lands on a line, it turns out to be directly related to