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## Pi

en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by ...

## What Is Pi? | Wonderopolis

wonderopolis.org/wonder/what-is-pi/

Before we can learn more about pi, it will help if we review a bit of geometry. In particular, we need to brush up on circles. Why? Well, we'll get around (pun ...

## Math Forum: Ask Dr. Math FAQ: About Pi

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

What is Pi? Who first used Pi? How do you find it? What is it for? How many digits is it?

www.ask.com/youtube?q=What Is Pi?&v=wNcFAQHJWAU
Dec 16, 2011 ... (π explained) a brief explanation of the constant Pi Pi=3.14159265... C = circumference = perimeter D = diameter = line dividing circle in half R..
www.ask.com/youtube?q=What Is Pi?&v=cC0fZ_lkFpQ
Jul 8, 2014 ... Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

## What is Pi? - I Like Pi

www.ilikepi.com/what-is-pi/

Pi is the 16th letter (π) of the Greek alphabet which is used to represent this mathematical constant.It is typically written as "pi" in text. Pi is, by definition, the ratio ...

## PI - Math.com

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

Pi is a name given to the ratio of the circumference of a circle to the diameter. That means, for any circle, you can divide the circumference (the distance around  ...

## 100,000 Digits of Pi

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

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

## MathSteps: Grade 6: Pi: What Is It? - Education Place

eduplace.com/math/mathsteps/6/g/index.html

Pi. There are many fascinating numbers in mathematics. One of the most interesting number relationships that students can discover in geometry is that the ratio ...

## Math Antics | Circles, What Is Pi?

mathantics.com/index.php/section/lesson/Circles_WhatIsPI

Answer
Pi, written as Π or π, is the 16th letter in the Greek Alphabet.
Letters of the Greek Alphabet:
More Info

### Pi - Math is Fun

www.mathsisfun.com

Or you could draw a circle with a diameter of 1. Then the circumference (the distance all the way around the circle) will be Pi ...

### What is Pi? - Live Science

www.livescience.com

Apr 30, 2013 ... Pi represents the ratio of the circumference of a circle to its diameter. Pi is an irrational number that never ends; the decimals go on forever and ...

### Why is Pi (actually) Important - Angio.net

www.angio.net

Other than being able to find your birthday in Pi, why is Pi important enough to deserve a day of its own -- and a search engine to draw attention to it? Well, let's  ...