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The circumference of a circle is 60π cm. What is the length of an arc of 140°?
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The circumference of a circle is 60π cm. What is the length of an arc of 140°?

User Friedi
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We can compare the arc length and the circumference using their subtended angles. The circumference subtends an angle of 360°.
360°/60π = 140°/S
S = 70π/3 cm
User Chapstick
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