The heat is conducted through tapered conical rod. The left end is located at x1 = 25mm and right end is located at x2 = 125mm. The diameter varies as $$D = 0.5\sqrt{x}$$ The left end is at temperature 376°C and right end is at temperature 100°C. Take K = 237W/m-K. Find the heat transfer.

Heat is conducted through a uniform square section tapered rod. Left end side is 1.5cm & right end side is 7cm. Then left end side is at temperature 464°C & right end side is at temperature 100°C. The conductivity of material is 52W/m-K. Find the heat transfer if the length of the rod is 43cm.