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I figured I needed to find the work, but I didn't have the force.

So I tried the equation Pressure*Area=Force

Then to get work, I used the equation Force*distance=Work

For the force, I got 15600. I then plugged that into the second formula as force and got 936. I have a really strong feeling it's not correct. My answer choices are as followed: A. 6.5*10^2 J B. 9.4*10^2 J C. 6.5*10^8 J and D. 9.4*10^8 J

I'm really confused on this and would really appreciate the help. My teacher doesn't really teach us what we need to know. Just throws it up on the board, briefly talks about it and expects us to learn from that. So would someone also help me understand Thermodynamics? It would be greatly appreciated :]

Thank you in advance,

Jessica