good evening

I would like to know how these problems are done since it is difficult for me to solve them

1. A sample of an ideal gas is in a vertical cylinder fitted with a piston. Like 5.79kJ of energy is transferred to the gas by heat to raise its temperature, the weight on the piston is adjusted so that the state of gas changes from point A to point B along the semicircle is shown in the figure. Search the change in internal energy of the gas.

PY kPa) 500 400 500 100 0 0 1.2 3.6 6.0 VL) Figura 5: Muestra de gas ideal\f