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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

Any complex number, say z, can be expressed using ... In the polar coordinate system, one number ...

www.piday.org/million

One Million Digits of Pi. 3.... More Pi Stuff. Pi Sightings: How People Celebrated Pi Day 2010 · Pi Sightings: A Couple Weird Things about Pi · Videos: “Lose ...

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

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

www.wired.com/2016/03/six-things-probably-didnt-know-pi

Mar 14, 2016 ... No matter how big your circle, the ratio of circumference to diameter is the value of Pi. Pi is an irrational number—you can't write it down as a ...

www.angio.net/pi/digits.html

Displays the first 10000 digits of pi on screen, with links to download 10, 50, 100, ..., and up to 1 million digits, with ... He also has a lot of other large numbers.

www.scientificamerican.com/article/what-is-pi-and-how-did-it

Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14. But pi is an irrational number, meaning that its ...

www.factmonster.com/math/numbers/first-thousand-digits-pi

www.mathsisfun.com/numbers/pi.html

Draw a circle with a diameter (all the way across the circle) of 1. Then the circumference (all the way around the circle) is 3.14159265... a number known as Pi.

www.bbc.com/future/story/20160311-how-the-number-pi-inspired-a-writing-style

Mar 11, 2016 ... The number pi, which is celebrated with its own day on 14 March, has inspired “ Pilish” – a fiendishly challenging form of writing. Give it a go ...