Answer variants:
158.2
169.2
167.2
164.2
In the given figure, \(AB\) and \(CD\) are two diameters of a circle (with centre \(O\)) perpendicular to each other and \(OD\) is the diameter of the smaller circle. If \(OA = 11\) \(cm\), determine the area of the shaded region.
The area of the shaded region \(cm^2\).