Two moles of helium gas are taken over the cycle $ABCD$, as shown in the $P$-$T$ diagram. The net work done on the gas in the cycle $ABCDA$ is:

Question

Two moles of helium gas are taken over the cycle $ABCD$, as shown in the $P$-$T$ diagram.

The net work done on the gas in the cycle $ABCDA$ is: