\u00a9 2021 wikiHow, Inc. All rights reserved. The circumference of a circle is found using this formula: $$\begin{matrix} C=\pi \cdot d\\or\\ \, C=2\pi \cdot r \end{matrix}$$. In other words, it’s the perimeter of the circle. where C is the circumference and d is the diameter of the circle. wikiHow is where trusted research and expert knowledge come together. Circumference may also refer to the circle itself, that is, the locus corresponding to the edge of a disk. The Circumference of a circle formula in mathematics is given as below – Circumference of a Circle (C) = 2πr = πd Where, π=3.1415, C is the circumference of the circle, d is the diameter of the circle, and r is the radius of the circle. To find circumference from the diameter, just multiply pi by the diameter. Google Classroom Facebook Twitter. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. You did it! This image may not be used by other entities without the express written consent of wikiHow, Inc.
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