Circumference and Arc Length Section 11.4

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Circumference and Arc Length Section 11.4

• Goal To find the length of a circular arc of a
  circle.

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Review

• Circle

Find the radius of a circle with a circumference
of 30m.
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Arc Length
Arc Length -
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Arc Length Corollary

• In a circle, the ratio of the length of a
  given arc to the circumference is equal to the
  ratio of the measure of the arc to 360º

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Example
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Semicircle
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Example