
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
March 14th, 2013, 03:02 AM  #1 
Newbie Joined: Mar 2013 Posts: 4 Thanks: 0  what number I should use for the cicumference of a circle
The diameter fits into a circle 3 times approx(3.14). This number is infinite but rounded off. Thus, for any circle, if you divide the circumference by the diameter you get a number close to pi; are there any picture example of this, as I would like to try this method? The number for the circumference, is that "360" or is that incorrect is another number ??? 
March 14th, 2013, 03:48 AM  #2 
Math Team Joined: Apr 2012 Posts: 1,579 Thanks: 22  Re: what number I should use for the cicumference of a circl
360 is the number of DEGREES in ANY circle. It is independent of the circumference.

March 14th, 2013, 07:56 AM  #3  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038  Re: what number I should use for the cicumference of a circl Quote:
circumference = pi * diameter so: pi = circumference / diameter This'll give you whatever was originally used as pi's value.  
March 14th, 2013, 07:59 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 20,926 Thanks: 2205 
An angle of 2? radians is the same as one of 360°. Hence the two are interchangeable, but it's usually convenient in a given context to use one form and stick to it.


Tags 
cicumference, circle, number 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Area enclosed by a semicircle and a quarter circle  yeoky  Algebra  4  May 3rd, 2014 01:06 AM 
How to create a circle within another circle  Aska123  Algebra  9  January 29th, 2014 11:06 PM 
Method to obtain N number of points lying on a Circle in 3D  flashingjack  Algebra  0  June 16th, 2010 02:36 AM 
Circle inside Circle (ask)  sir anrava  Algebra  1  January 19th, 2010 11:18 AM 
Complex number circle  t031  Complex Analysis  3  February 10th, 2008 09:13 PM 