A 0.2 m wide strip 31 mm thick is fed through a rolling mill w/ rolls of diameter 0.2 m. The work thickness is to be reduced by 4 mm in one pass at a roll speed of 21 rev/min. The average flow stress of the work material, as it passes through the rolls is 172 MPa. Calculate the Power required to pull the strip through in kW (kilo Watt).