A vertical piston cylider assemble contains .6kg of air (k=1.4, R=287) initially at 110kPa and 27 deg C (state 1). the air is first compressed isentropically (polytropic coefficient=k) to a temperature of 117 deg C (state 2) which is followed by a constant pressure expansion process taht leads to a final volume (state 3) that is identical to that of the initial state v3=v1. Calculate the volumes corresponding to all three states?