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$[1](10$ Points$)$

A fin with conductivity of $K$ is subject to temperature Tb at its base. The fin is hallow filled with the same ambient condition as outside of the fin. The dimeter of the fin is D$,$ and the inner diameter is d$.$ The tip is subjected to the same convective heat transfer as the rest of the surface denoted as $h$ to the ambient of $T_{}.$ Derive the thermal resistance for the fin.