AB and CD are respectively arcs of two concentric circle of radii 42 cm and 14 cm and centre O as shown in the adjoining

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Q 3032801732.     AB and CD are respectively arcs of two concentric circle of radii 42 cm and 14 cm and centre O as shown in the adjoining figure. If \angle AOB = 30^{\circ}, then the area of the shaded region is
A

 \frac{1232}{3} cm^2

B

\frac{1220}{3} cm^2

C

411 cm^2

D

None of these

HINT

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

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