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The perimeter of a certain sector of a c...

The perimeter of a certain sector of a circle is equal to the length of the arc of semi circle having the same radius. Express the angle of the sector in degrees, minutes and seconds.

A

`65^@27'16''`

B

`68^@18'19''`

C

`56^@52'18''`

D

none of these

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The correct Answer is:
A
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