The Math Forum

Ask Dr. Math - Questions and Answers from our Archives
Associated Topics || Dr. Math Home || Search Dr. Math

Determining the Value of Pi

Date: 8/5/96 at 16:17:33
From: Patrick Caswell
Subject: How do You Get Pi?

How can you determine a value of Pi?  Is Pi the circumference of a 
circle divided by the radius?

Date: 8/5/96 at 17:33:55
From: Doctor Paul
Subject: Re: How do You Get Pi?

Not quite. Pi can be found by dividing the circumference by the diameter.  

Note: it has been proven that Pi is irrational. This means it cannot 
be expressed as a whole number divided by another whole number. So if 
you are planning on measuring the circumference and dividing it by the 
diameter, both numbers cannot be whole. If they are, one of two things 
has happened:  

  1) You are dealing with an oval  
  2) You have disproven every great mathematician in history. *grin*

-Doctor Paul,  The Math Forum
 Check out our web site!   
Associated Topics:
Middle School Pi

Search the Dr. Math Library:

Find items containing (put spaces between keywords):
Click only once for faster results:

[ Choose "whole words" when searching for a word like age.]

all keywords, in any order at least one, that exact phrase
parts of words whole words

Submit your own question to Dr. Math

[Privacy Policy] [Terms of Use]

Math Forum Home || Math Library || Quick Reference || Math Forum Search

Ask Dr. MathTM
© 1994- The Math Forum at NCTM. All rights reserved.