3. A homicide victim was found in a room that is kept at constant temperature TR = 20C. The detectives measured the victim's body temperature when they arrived the crime scene and another measurement was made one hour later. The results were 27 and 24C, respectively. Assume that the body is cooled by convection to the room environment, the convection heat transfer coefficient is constant, and the victim's body can be treated as a macroscopic system. If the victim's temperature was 37 C just before death and the first temperature measurement was made at 12 noon, estimate the time of death