The area of a sector of a circle of radius 5 cm formed by an arc of length 3.5 cm is?
0.35 $cm^2$
17.5 $cm^2$
8.75 $cm^2$
55 $cm^2$
Explanation:
(5 $\times$ 3.5)/2 = 8.75
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The area of sector of a circle whose radius is 12 metro and whose angle at the center is $40^\circ$ is?