Subject :IMO Class : Class 8

In the figure given below, O is the centre of the circle and OPQR is a rectangle. A is a point on PO such that AO = 1/3 PO and B is the mid point of OR. Find the area of the shaded region if PA = 8 cm and BR = 4 cm (Use Ρ = 3.14)

A 132.68 cm^{2}

B 121.12 cm^{2}

C 108.56 cm^{2}

D None of these