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A spherical shaped vessel of 1.2m outside diameter is 100mm thick. The thermal conductivity of the material of sphere is 0.3KJhr-m-C. If the temperature

A spherical shaped vessel of 1.2m outside diameter is 100mm thick. The thermal conductivity of the material of sphere is 0.3KJhr-m-C. If the temperature difference between the inner and outer surface is 200C, find the rate of heat leakage and express it in Watts.

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