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An arc AB of a cricle subtends an angle ...

An arc AB of a cricle subtends an angle x radians at the centre O of the circle, Given that the area of the sector AOB is equal to the square of the length of the arc AB, find the volume of x.

A

`(1)/(sqrt(2))`

B

`(1)/(2)`

C

`(1)/(sqrt(3))`

D

`(1)/(3)`

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The correct Answer is:
B
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