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If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°?
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If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°?

User Rob Eroh
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If the angle is mesure in RADIANS then the arc is given by r. So first convert 81 degrees to radians, then multiply by r which is 10 x 81=810
User Richard Harrison
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