A plane wall $6$ cm thick generates heat internally at the rate of $0\mathrm{.}3M\frac{W}{m^3}.$ One

side of the wall is insulated and the other side is exposed to an environment at $93$

$C$ with a convective heat transfer coefficient of $570\frac{W}{m^2}-K.$ The thermal

conductivity of the wall material is $21\frac{W}{m}-K.$ Determine

a$.$ the temperature in the wall as a function of distance

b$.$ the maximum temperature in the wall