The work done during process 1-3-6 is given by the area under the curve. We have two shapes that make up the area — A triangle and a rectangle.

A_{trangle} = (1/2)b•h

A_{rectangle} = l•w

Height, h = 3P_{0} - P_{0} = 2P_{0}

Base, b = 3V_{0} - V_{0} = 2V_{0}

Calculate the work *W* done by the gas during process 1 to 3 to 6.

Express your answer in terms of *p*_{0} and *V*_{0}.

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