In an absorption tower operating on the countercurrent principle, the A$-$B binary gas mixture is mixed with a suitable liquid solution.Component A is removed from the medium by washing. The concentration of A in the gas mixture is $0\mathrm{.}42$ at the tower entrancemol and $0\mathrm{.}02$ mol at the tower exit. The flow rate of the inert component in the gas mixture in the tower is $2\mathrm{.}5$ kmol$/$hand it is known as K'ya $=85($kmol $/$h$.$m$2)($m$2/$m$3).$ The empty tower cross$-$sectional area is $0\mathrm{.}093$ m$2.$ The followingCalculate the height of the filling material in the tower using the data.