Circles 2 - Circumference and Area

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
6489 views | 1 rating
Meets NCTM Standards:
Lesson Description:

Easy formulas and examples for circumference and area of a circle: C = 2r * pi A = r^2 * pi;

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Additional Resources:
  • Diameter of a circle - A description and explanation of what the diameter of a circle is and how to calculate other measurements from the diameter.
  • Circumference of a circle - Definition of circumference of a circle, how to find it, and some interesting facts about circumference.
  • Area of a circle - The definition of area of a circle as well as explanations of how to find the area of a circle is shown with several formulas.
Questions answered by this video:
  • What are the formulas for circumference and area of a circle?
  • How can you find the exact circumference and area of a circle if its radius is 6 meters?
  • How can you approximate the circumference and area of a circle using 3.14 as pi?
  • How do you find the exact circumference and area of a circle with a diameter of 8 in.?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson takes the ideas learned in the previous lesson and solves some example problems for finding the circumference and area of circles. All steps are shown and explained for each problem. This is a good video for testing your knowledge and doing some example problems on these basic geometry formulas.