clc
//initialisation of variables
Gama=1.33//ft/lb
p=100//lb/in^2
p1=20//lb/in^2
v2=10.05//ft^3
v=3//ft/lb
//CALCULATIONS
W=144*(p*v-p1*v2)/0.33//ft lb
//RESULTS
printf('The work done=% f ft lb',W)