A transistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board. The transistor is cooled by air flowing over it with an average heat transfer coefficient of 30 W/m². °C. The air temperature is 55°C and the transistor case temperature is not to exceed 70°C. Determine the amount of power this transistor can dissipate safely. Disregard any heat transfer from the transistor base. Your solution must state governing equations and associated assumptions, illustration and step by step execution of the overall solution.

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