A circle has radius 10. A sector of this circle has a central angle of 36°. What is the area of the sector?
A$\pi$
B$36\pi$
C$10\pi$
D$3.6\pi$
Answer & Solution
Correct answer: C. $10\pi$
$A_{\text{sector}} = \frac{36}{360} \cdot \pi (10)^2 = \frac{1}{10} \cdot 100\pi = 10\pi$.
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