Sector Areas and Arc Lengths
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Sectors as fractions of circles

Sectors as fractions of circles

Sector of a circle with centre O, two radii, central angle theta, and arc length L labelled

A sector is a slice of a circle made from two radii and the arc between them. The diagram shows the central angle θ\thetaθ and the curved edge, which is the arc length LLL.

Sector Areas and Arc Lengths Lesson

  1. GCSE
  2. /Maths
  3. /Sector Areas and Arc Lengths