GlossariesGCSE GlossariesGCSE Maths GlossaryCircumference

Circumference - GCSE Maths Definition

Reviewed by: Dan Finlay

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Circumference is the term used to describe the total distance around the edge of a circle. In GCSE Maths, understanding circumference is crucial as it forms the basis for calculating other circle-related properties.

The formula to find the circumference of a circle is:

C equals pi cross times d

or alternatively,

C equals 2 pi cross times r

where:

  • d is the diameter,

  • r is the radius, and

  • pi (pi) is a mathematical constant approximately equal to 3.14159.

Knowing how to calculate the circumference helps students solve problems related to circular shapes and is a fundamental aspect of geometry.

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Dan Finlay

Reviewer: Dan Finlay

Expertise: Maths Subject Lead

Dan graduated from the University of Oxford with a First class degree in mathematics. As well as teaching maths for over 8 years, Dan has marked a range of exams for Edexcel, tutored students and taught A Level Accounting. Dan has a keen interest in statistics and probability and their real-life applications.

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