Aperson is found dead at 5pm in a room whose temperature is 21°c. the temperature of the body is measured to be 25°c when found, and the heat transfer coefficient is estimated to be 8 w/m2·k. modeling the body as a 30-cm-diameter, 1.70-m-long cylinder and using the lumped system analysis as a rough approximation, estimate the number of hours that passed from the time of death of the person to the time the body was found.