A piece of paper in the shape of a sector of a circle of radius 10cm and of angle 216^{\circ} just covers the latera

### Question Asked by a Student from EXXAMM.com Team

Q 3030512412.     A piece of paper in the shape of a sector of a circle of radius 10cm and of angle 216^{\circ} just covers the lateral surface of a right circular cone of vertical angle  2\theta .Then  \sin\: \theta is
A

3/5

B

4/5

C

3/4

D

None of these

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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