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

Sources:

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

How to

www.wikihow.com/Work-out-the-Circumference-of-a-Circle

How to

www.mathgoodies.com/calculators/circumference-calculator.html

Our

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

For any

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

The distance around a rectangle or a square is as you might remember called

www.virtualnerd.com/tutorials/?id=PreAlg_11_01_0010

Then you can use the formula for

www.reference.com/math/calculate-circumference-circle-cd38f7adede000a6

To

www.ask.com/youtube?q=How Do I Work Out the Circumference of a Circle?&v=1XFkAZW-rWg

Oct 23, 2007 ... Like my video? Visit http://www.MathHelp.com and let's do the complete lesson!
In this lesson, students learn that the circumference of a circle ...

www.ask.com/youtube?q=How Do I Work Out the Circumference of a Circle?&v=brxwLXei3so

Nov 15, 2010 ... How to find the Circumference of a Circle . Jaymee W ... How to find radius,
diameter, circumference and area of circles ? - Duration: 7:43.