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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.

Pi - Wikipedia

en.wikipedia.org/wiki/Pi

Some approximations of pi include: Integers: 3; Fractions: Approximate fractions include (in order of increasing accuracy) ...

100,000 Digits of Pi

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

100,000 Digits of Pi Pi Logo. 3.141592653589793238462643383279502884197169399375105820974944592307816406286  ...

Value Of Pi - C2 Wiki

wiki.c2.com/?ValueOfPi

The ValueOfPi is irrational (more specifically, transcendental); what follows are either ... Seriously, it does make sense to define "pi" as a defined constant - not ...

Math Forum: Finding the Value of Pi

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 ...

The Long Search for the Value of Pi - Scientific American

www.scientificamerican.com/article/the-long-search-for-the-value-of-pi/

Mar 14, 2016 ... The mathematical odyssey, plus a guide to calculating pi for yourself.

VALUE OF PI - EUdesign

www.eudesign.com/mnems/pi.htm

Useful mnemonic rhymes for remembering the value of Pi to various decimal places. Info provided by EUdesign.com. One of several in an indexed series.

Ask Alexa for the value of pi (if you have time to kill) - CNET

www.cnet.com/news/amazon-alexa-echo-value-of-pi/

Nov 15, 2016 ... Get comfortable. Amazon's Alexa assistant gives a long-winded, not entirely literal answer when you request the value of pi.

What is Pi? - Live Science

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

Apr 30, 2013 ... There is no exact value, seeing as the number does not end. Many mathematicians and math fans are interested in calculating pi to as many ...

What is the exact value of pi? - Math Central

mathcentral.uregina.ca/QQ/database/QQ.09.08/h/mahesh1.html

search. Question from mahesh, a student: what is the exact value of pi. 22/7 is accurate value of pi, if not then how can i find out the exact pi value.