Instructional Video

Find the Radius of a Circle Given the Area (Example)

Curated and Reviewed by Lesson Planet

Work backwards if you dare. Scholars view a video to learn how to apply the area formula of a circle to solve problems. They watch an example where the focus is finding the radius of a circle given its area, requiring the use of inverse operations to solve for r.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Provide the video to classmates struggling with the concept
Classroom Considerations
  • Learners should have experience using the area formula of a circle
  • Note that the video uses a TI-84 calculator; pupils must be able to find pi on their own calculators
  • This video is hosted on YouTube
Pros
  • Step-by-step explanations make calculations clear
  • Work shown is organized and neat
Cons
  • None
Common Core