Calculate the overall heat-transfer coeffi cient of a steel pipe based on the inside area. The inside diameter of the pipe is 10 cm, and the pipe is 2 cm thick. The inside convective heattransfer coeffi cient is 350 W/(m 2 °C), the outside convective heat-transfer coeffi cient is 25 W/(m 2 °C), the thermal conductivity of the steel pipe is 15W/(m °C). If the pipe is used to convey steam at a bulk temperature of 110°C and the outside ambient temperature is 20°C, determine the rate of heat transfer from the pipe.