A sector of a circle of, radlus of 7.2em which subtends an angle 3000 at the centre is used to form a cone. What is the radius of the base of the cone?

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A sector of a circle of, radlus of 7.2em which subtends an angle 3000 at the centre is ...

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A \(6 \mathrm{~cm}\)
B \(7 \mathrm{~cm}\)
C \(8 \mathrm{~cm}\)
D \(9 \mathrm{~cm}\)

Correct Answer: Option C

Explanation:

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