A double acting cylinder with a single rod must produce a thrust of 80KN and move out with a velocity of 3mm/s on the out stroke. The operating pressure is 100barg. Calculate the bore diameter and the flow rate of oil. If the hydro-mechanical efficiency is 0.95, the rod diameter is 25mm and the oil pressure & flow are the same in both the retraction and advance strokes what would be the force and speed in the retraction direction?