Consider a canned food product packaged in a cylindrical steel can with a 5 cm diameter and 3 cm height, at an initial temperature of 20°C. Assuming the surface resistance to heat transfer is negligible, determine the temperature at the geometric center of the product after heating in boiling water at 100°C for 30 min. The thermal conductivity, heat capacity, and density of the product are 0.5 W/m°C, 3.9 kJ/kg·K, and 950 kg/m³, respectively.