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OpenStudy (anonymous):
The circumference of a circle is 36 cm. Find the diameter, the radius, and the length of an arc of 200°. A. 36 cm; 72 cm; 10 cm B. 72 cm; 18 cm; 190 cm C. 18 cm; 36 cm; 10 cm D. 36 cm; 18 cm; 20 cm
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OpenStudy (anonymous):
C= 2πr right? Substitute C = 36 cm and solve for r (radius)
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