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Question

Find the area of a sector with a central angle of 120 degrees and a radius of 10cm

A
10πcm2
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B
20πcm2
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C
30πcm2
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D
40πcm2
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Solution

The correct option is C 30πcm2
The area of the sector with a central angle and radius value is given by : n360πr2

= 120360×π×102
= 30πcm2

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