A settling analysis is run on sludge from an extended aeration activated sludge reactor with the following results: Under equilibrium conditions, flow to the secondary clarifier (Qo) is 4200 m3/d with solids content (Co) of 2000mg/L. For a preselected solids flux rate of 2.5Kg/(m2h), determine the area required for thickening (AT) and the area required for clarification ?(Ac) and the diameter of the clarifier (D)