Find the heat transfer per unit area through the composite wall in the figure. Assume one dimensional heat flow and that there is no heat flow between \(B\) and \(C\). The thermal conductivities are \(k_{A}=0.04 \mathrm{~W} / \mathrm{m} /{ }^{\circ} \mathrm{C}, k_{B}=0.2 \mathrm{~W} / \mathrm{m} /{ }^{\circ} \mathrm{C} k_{C}=0.03 \mathrm{~W} / \mathrm{m} /{ }^{\circ} \mathrm{C}\), and \(k_{D}=0.06\) \(\mathrm{W} / \mathrm{m} /{ }^{\circ} \mathrm{C}\).

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T=370C A C D Area 0.1 m 7.5 cm 5 cm 2.5 cm T=66C