Question 3. (a) Find the work done by an ideal gas as it expands along the path ABCDA shown in Figure 1 (left). [b] Find the work done by an ideal gas as it expands from point A to point B along the path, and also nd the work done when it is oornpressed from B to A along the same path shown in Figure 1 (right). Pith} 400 a 3m 2041 A 100 v 3 m1: 1234lml Figure 1: Work done by an ideal gas