Lesson: Arc Lengths Mathematics

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In this lesson, we will learn how to find the arc length and the perimeter of a circular sector using radians and solve problems including real-life situations.

Lesson Plan

Students will be able to

  • recognize the formulas for calculating arc length when the measure of the arc is given in radians,
  • calculate the length of a sector’s arc,
  • calculate the measure of the angle of a sector in radians when given the radius and arc length of the arc,
  • calculate the radius of a sector when given the measure of the arc in radians and the length of the arc (or perimeter),
  • calculate the perimeter of a sector,
  • solve real-world problems by finding arc lengths.

Lesson Explainer

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