A sector of a circle of radius 21 cm has a central angle of 60°. Taking π = 22/7, what is the area of the sector?
Correct answer B. 231 sq cm
Explanation
Sector area = (θ/360) x πr² = (60/360) x 22/7 x 21 x 21 = 1386/6 = 231 sq cm. The value 22 cm is the arc length.
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