Heat and Thermodynamics

An ideal monatomic gas of n moles is taken through a cycle WXYZW consisting of consecutive adiabatic and isobaric quasi-static processes, as shown in the schematic V−T diagram. The volume of the gas at W,X and Y points are, 64cm3, 125cm3 and 250cm3, respectively. If the absolute temperature of the gas Tw at the point W is such that nRTw=1J(R is the universal gas constant), then the amount of heat absorbed (in J ) by the gas along the path XY is ____