(Solved): Please answer everything and correctly The figure shows an illustration of using biaxial testing to ...

The figure shows an illustration of using biaxial testing to measure the mechanical properties of a rubber sheet. The measured stress and strain along the $x$ direction are ${?}_x=2275\mathrm{Pa}$ and ${?}_x=0.15(\mathrm{mm}/\mathrm{mm})$ respectively, while those along the $y$ direction are ${?}_y=2110\mathrm{Pa}$ and ${?}_y=0.12(\mathrm{mm}/\mathrm{mm})$ respectively. The original thickness of the rubber sheet is $2\mathrm{mm}$. The rubber sheet is assumed to be homogeneous, isotropic and behaves linearly and elastically. (1) Determine the modulus of elasticity, Poisson's ratio, and the change of the thickness of the rubber sheet. (15\% in total, $5\%$ for each answer) (2) Determine the dilatation of the rubber sheet. (15\%)