The door of a kitchen oven contains a window made of a single pane of ¼-in.-thick Pyrex glass. The interior oven temperature is 5500F and the room air is at 680F. The heat transfer coefficient on the oven interior is 1.7 Btu/h.ft2.0F, and on the oven exterior is 0.88 Btu/h.ft2.0F. A toddler comes by and touches the window. Calculate the temperature of the surface that the child's hand contacts.