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Circumference

Explore Circumference on MathWorld


The circumference of a circle is the length of its perimeter.

Circumference is a middle school-level concept. It is listed in the California State Standards for Grade 6.

Prerequisites

Circle: A circle is the set of points in a plane that are equidistant from a given center point.
Perimeter: The perimeter is a length around the boundary of a closed two-dimensional region. The perimeter of a circle is called its circumference.
Pi: Pi is the mathematical constant defined as the ratio of the circumference of a circle to its diameter with value of approximately 3.14159.

Classroom Articles on Plane Geometry

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  • Classroom Articles on Geometry (Up to Middle School Level)

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