Aluminum rivets used in airplane construction are made slightly too large for the rivet holes to be sure of a tight fit. The rivets are cooled with dry ice (−78.5 °C) before they are driven into the holes. If the holes have a diameter of 0.6350 cm at 20.5 °C, what should be the diameter of the rivets at 20.5 °C if they are to just fit when cooled to the temperature of dry ice?