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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.virtualnerd.com/pre-algebra/perimeter-area-volume/circles/circumference/circle-circumference-from-diameter

Then you can use the

www.math.com/tables/geometry/circles.htm

arc: a curved line that is part of the

www.mathsteacher.com.au/year9/ch14_measurement/02_circle/circle.htm

www.1728.org/diamform.htm

www.aaamath.com/geo612x4.htm

xkcd.com/1184/

www.coolmath.com/reference/circles-geometry

Definitions and

www.mathopenref.com/circumference.html

Definition and properties of 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

www.wikihow.com

Write down the

www.khanacademy.org

Here we find the