In the given figure, tangents ^@ PQ ^@ and ^@ PR ^@ are drawn from an external point ^@ P ^@ to a circle with center ^@ O ^@, such that ^@ \angle RPQ = 60^\circ ^@. A chord ^@ RS ^@ is drawn parallel to the tangent ^@ PQ ^@. What is the measure of ^@ \angle RQS ^@ ?
A decorative block shown in the figure is made of two solids_a cube and a hemisphere. The base of the block is the cube with edge of 3.2 cm and the hemisphere attached on the top has a diameter of 2.5 cm. If the block to be painted, then the total area to be painted is: