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Question

What is the area of a sector whose arc subtends a 30 angle at the center of a circle of radius 12 inches?


A
144π inches2
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B
12π inches2
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C
6π inches2
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D
24π inches2
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Solution

The correct option is B 12π inches2
Area of the sector =θ360×πr2

For the figure given,
θ=30 and r=12 inches

Area of the sector =30360×π×(12)2

Area of the sector =112×π×(12)2

Area of the sector =12π inches2


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