Work done PV diagram
1. The problem statement, all variables and given/known data
A mass of gas occupying volume V1 = 2 m3 at the pressure P1 = 4*10^5 Pa performs the cycle represented in the Figure that i have uploaded.What is the work of gas in this cycle, knowing that the pressure P2 = 10^5 Pa
2. Relevant equations
Work=1/2 * (P1  P2) * (V1  V3)
3. The attempt at a solution
The work is the area within the triangle.
1/2 base * height
= 1/2 * (P1  P2) * (V1  V3)
The question that i have is how do i find V3?
SORRY FOR BAD ENGLISHHH
