Two concentric hollow cylinders are arranged as shown in the figure. The inner one has a radius of $1 m$ and the outer one has a radius of $2 m$. The length of both cylinders is $10$ $m$. The coefficient of heat flow is $k=10 \frac{W}{m.K}$ . Inner cylinder has temperature, $T_1= 100 ^oC$ and the outer one has a temperature of $T_2= 0^oC$.

What's the Rate of Heat flow between the cylinders?