o come on come on
a is a straight line with neg gradient at const temp so use P1V1=P2V2
b) is const P so is a straight line parallel to the X axis
c) PV=const is hypernolic
the triangle is (.02, 5) then (.08, 1.6) for a
b is parallel line at y=1.6
c is PV =const from (02,5) to p2, 1.6) ( this allows you to calc p2)
and so you now know the intercept for the straight line....
a does work b looks as tho it does work c work done on it
honestly you read the chapter in your textbook
and then do the problems as they do in examples .....
and no please dont post again - two thermodynamic problems for an OAP are quite enough, but thanks