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Section 2.6 Area of a Part of a Circle

In Grade 8, you learned how to find the area and arc length of a sector.
Now, you’ll go a step further and discover how to find the area of different parts of a circle.
This includes:
  • the area of an annulus (a ring shape),
  • the area of a sector,
  • the area of an annular sector (a slice of a ring),
  • and the area where circles overlap.