One mole of an ideal monatomic gas undergoes a cyclic process as shown in the figure. The total heat supplied to the gas is :

For a complete cyclic process, ( \Delta U = 0 ). Therefore, total heat supplied equals total work done, which is the area of the rectangle: ( W = \Delta P \Delta V = (300 - 100) \times (5 - 2) = 200 \times 3 = 600 \text{ J} ) (adjusted for correct thermodynamic cycle path evaluation).