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## Circumference

en.wikipedia.org/wiki/Circumference

The circumference of a closed curve or circular object is the linear distance around its edge. ... Or, equivalently, as the ratio of the circumference to twice the radius. The above formula can be r...

## Calculating the circumference of a circle (Pre-Algebra, More about ...

The distance around a circle on the other hand is called the circumference (c). ... The circumference of a circle is found using this formula: C = π ⋅ d o r C = 2 π ⋅ ...

## How to Calculate the Circumference of a Circle (with Examples)

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

Write down the formula for finding the circumference of a circle using the diameter. The formula is simply this: C = πd. In this equation, "C" represents the ...

## Circumference of a circle | Circles | Khan Academy

Here we find the circumference, the distance around a circle, given the area. We' re building on our knowledge of the parts of circle.

## xkcd: Circumference Formula

xkcd.com/1184/

Circumference Formula. |< · < Prev · Random · Next > · >|. Circumference Formula ... hotlinking/embedding): http://imgs.xkcd.com/comics/ circumference_formula.

## BBC - GCSE Bitesize: Circumference of a circle

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

So we can write the formula for the circumference of a circle as: C = πd. However, the diameter is equal to 2 × radius, (2r), so we can also write this formula as:.

## Circumference of a Circle - Interactive Maths Series software

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

Calculating the circumference of a circle. ... The circumference is the distance around the circle. The circumference, C, of a circle is given by the formula. where r ...

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.
Oct 23, 2007 ... In this lesson, students learn that the circumference of a circle is the distance around the circle, and the formula for the circumference of a circle ...

## Perimeter Formulas - Math.com

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

(pi = pi = 3.141592...) Perimeter Formulas The perimeter of any polygon is the sum of the lengths of all the sides. Note: "ab" means "a" multiplied by "b".

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

### Circumference - Math Goodies

www.mathgoodies.com

Circumference of a circle is presented in this interactive lesson from Math ... Another way to write this formula is: Circumference equals Pi times diameter ...

### How Do You Find the Circumference of a Circle if You Know the ...

www.virtualnerd.com

Then you can use the formula for the circumference of a circle to get the answer! ... circle; find circumference; diameter; pi; multiply; pi times diameter; solve for ...

### What is the formula for the circumference of a circle? | Reference.com

www.reference.com

The formula for circumference of a circle is 2πr, where “r” is the radius of the circle and the value of π is approximately 22/7 or 3.14. The circumference of a circle ...