How do I solve the following block to find the volumetric strain. Its question 3 on the link
I know that volumetric strain is equal to change in volume EV/ origninal volume(V)
Is Ev = Ex + Ey + Ev equal to volumetric strain.
I was told that the volumetric strain should be about 6.8 x 10^-4
Any help would be appreciated people.