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Circumference of a Circle

Circumference of a Circle. By the end of today, you will know about circumference of a circle and pi. Circumference. The circumference of a circle is found by using the formula C = 2 π r. Example 1. Find the circumference of a circle whose diameter is 15 cm. Leave pi in your answer.

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Circumference of a Circle

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  1. Circumference of a Circle By the end of today, you will know about circumference of a circle and pi.

  2. Circumference • The circumference of a circle is found by using the formula C = 2πr

  3. Example 1 • Find the circumference of a circle whose diameter is 15 cm. Leave pi in your answer

  4. Example 2 • Find the circumference of a circle with a radius of 22 inches.

  5. Example 3 • If a circle has a circumference of 18π, what is the radius of the circle?

  6. Practice Problems

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