Ronan and Sarah deposit some amount in joint back account such that total balance remains 2000. If amount deposited by Ronan and Sarah are plotted as linear graph on x-y plane, find the area between this graph and coordinate axes.

The bisectors of opposite angles of a cyclic quadrilateral ABCD intersect the circle, circumscribing it at the points P and Q. If radius of the circle is 16 cm, find the distance between points P and Q.