A thin piece of metal foil is 1.074 ft. long and 5.23 inches wide. The density of the metal is 8.526 g/cm3 and the specific heat of the metal is 0.429 J / g oC. If the metal foil absorbs 785.2 J of heat as its temperature changes from 21.64 oC to 33.45 oC, calculate the thickness of the metal foil in mm.