# Area under the curve in PV diagram

Area under the curve in PV diagram(q35)

For this question:
http://tinyurl.com/37tqvp

What I do is to find the area of PV under the straight line, using
(area of bigger rectangle-area of smaller rectangle)/2
=((p2*v2)-(p1*v1))/2

but this is not one of the choices.

May I know how to solve this question correctly?

Last edited:

Astronuc
Staff Emeritus