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Circle Metrics: Arc Length, Sectors, and Circular Segments

9th Grade · Math · Open Global Math

5 lessons

Goal

Derive and calculate arc length, sector area, and circular segment area in degrees and radians, and solve composite geometric problems.

5 lessons
0 of 5 done
  1. Arc Length and Sector AreaUp next
  2. Finding the Central Angle from Arc Length or Sector AreaNot started yet
  3. Calculating the Area of Circular SegmentsYou are here
  4. Perimeter of Sectors and Composite Circular RegionsNot started yet
  5. Mixed Arc Length and Sector Area ProblemsNot started yet
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Learning standards covered

GlobalOGM.10.TRG.2Open Global Math Standards 2026™ · 9th Grade

Derive and calculate arc length and sector area of circles, and calculate surface areas and volumes of right prisms, cylinders, pyramids, cones, and spheres using Cavalieri's principle and decomposition methods.