$!$

Required information

Consider a water pipe of length $L=17m,$ inner radius $r_1=15cm,$ outer radius $r_2=20cm,$ and thermal conductivity $k=14$

$\frac{W}{m}*K.$ Heat is generated in the pipe material uniformly by a $15-$kW electric resistance heater. The inner and outer surfaces

of the pipe are at $T_1=60C$ and $T_2=80C,$ respectively.

If the rate of heat generation is $16\mathrm{.}04k\frac{W}{m^3},$ determine the temperature at the center plane of the pipe. $($Round your answer up to $2$

decimal places.$)$

The temperature at the center plane of the pipe $=$

$C.$