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Pi

en.wikipedia.org/wiki/Pi

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

Value Of Pi

c2.com/cgi/wiki?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 ...

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.

One Million Digits of Pi · Pi Day

www.piday.org/million/

One Million Digits of Pi. 3. ... Pi Sightings: Mythbusters' Grant Imahara's Prisoner Number · digits · Pi Sightings: Great Pi Day Activities for Teachers · fugue.

The first ten thousand digits of pi - Joy of Pi | Pi Links

www.joyofpi.com/pi.html

The Joy of Pi includes one million digits of pi. But in case you need just a few, here are the first ten thousand digits: 3. 1415926535 8979323846 2643383279 ...

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.

What is Pi? - Live Science

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

Apr 30, 2013 ... When starting off in math, students are introduced to pi as a value of 3.14 or 3.14159. Though it is an irrational number, some use rational ...

The Area of a Circle and the Value of Pi | WIRED

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

Mar 14, 2015 ... How do you find the area of a circle? Can you measure the area of a circle and use that to find a value for Pi?

Why haven't we found the exact value of PI yet? - Quora

www.quora.com/Why-havent-we-found-the-exact-value-of-PI-yet

Dec 31, 2015 ... We do know the exact value of π and a number of formulas for expressing it have been given. There is however, no way to express this exactly ...

Pi, a Very Special Number : nrich.maths.org

nrich.maths.org/2490

Read all about the number pi and the mathematicians who have tried to find out its value as accurately as possible.

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

100,000 Digits of Pi

www.geom.uiuc.edu

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

Math Forum: Finding the Value of Pi

mathforum.org

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 History of Pi

www.math.rutgers.edu

They used this method to find that pi was slightly greater than 3, and came up with the value 3 1/8 or 3.125 (Beckmann, 11). However, this theory is probably a  ...