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Web Results

en.wikipedia.org/wiki/Circumference

The

www.mathplanet.com/education/pre-algebra/more-about-equation-and-inequalities/calculating-the-circumference-of-a-circle

www.khanacademy.org/math/basic-geo/basic-geo-area-perimeter/basic-geo-area-circumference/v/circumference-from-area

Here we find the

www.wikihow.com/Calculate-the-Circumference-of-a-Circle

In this

www.ask.com/youtube?q=Circumference Circle Formula&v=1XFkAZW-rWg

Oct 23, 2007 ... In this lesson, students learn that the circumference of a circle is the dista... ... But
I have to show the formula and work on my homework :(.

www.bbc.co.uk/schools/gcsebitesize/maths/geometry/circlesrev2.shtml

The

xkcd.com/1184/

www.coolmath.com/reference/circles-geometry

Definitions and

www.mathopenref.com/circumference.html

Definition and properties of the

www.mathopenref.com/circumferencederive.html

This page describes how to derive the forumula for the

Answer

To work out the circumference of a circle, you multiply the diameter by Pi (approximately 3.141).

Sources:

More Info

www.mathgoodies.com

Pi is the ratio of the

www.virtualnerd.com

Then you can use the

www.aaamath.com