A plane wall $8$cm thick generates heat internally at the rate of $0\mathrm{.}4$

MW$/$m$3$

$.$ One side of the wall is insulated and the other side is exposed to

an environment at $93\backslash$deg C$.$ The convection coefficient between the wall and

the environment is $570$W$/$m$2$

$.$K$.$ If k $=24$ W$/$m$.$K$,$ calculate the maximum

temperature in the wall which is $2\mathrm{.}4$m by $1\mathrm{.}2$m$.$