$(25$ pts$)$ A flexible rubber pad is bonded completely between two steel plates. Find the shear strain in the rubber pad if the dimensions of the pad are, $a=150mm,b=200mm,$ and $t=50mm,$ and the upper plate moves to the right by $8\mathrm{.}0$ mm relative to the lower plate. Show vour result tn three digits.

Given

$a=150mm$

$b=200mm$

$t=50mm$