A circle has a central angle of 60° subtending an arc of length 4 cm. What is the circumference of the circle?
A$8$ cm
B$12$ cm
C$30$ cm
D$24$ cm
Answer & Solution
Correct answer: D. $24$ cm
$\frac{4}{C} = \frac{60}{360} = \frac{1}{6}$, so $C = 24$ cm.
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