Circumference: Lesson

This Circumference: Lesson video also includes:

It all depends what is given. The section of a large geometry playlist discusses the two formulas for finding the circumference of a circle. With the aid of the formulas, the presenter demonstrates finding the distance around circles in examples.

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CCSS: Adaptable
Instructional Ideas

  • Investigate the ratio of the diameter to the circumference for several circles
Classroom Considerations

  • It is helpful if learners know the parts of a circle and how they relate
  • Using a calculator will make it easier to get a closer approximation of the circumference
Pros

  • Provides a graphical representation on how to find one value in the formula if the other two are known
  • Links to several other circumference resources
Cons

  • None
Common Core