← 2.6 Area of a Part of a Circle

Arcs and sectors

Mathematics · Grade 10 · about 40 minutes

Taking the right fraction of a circle, and why every formula here is the same idea.

Sign in to read this lesson

Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.

  • 9 sections of explanation, worked examples and diagrams
  • 2 practice tasks with hints and worked answers
  • A quiz that marks itself as you go
  • Your progress kept across every subject you take
Sign in Create an account