A square brass plate, 8.20 cm on a side , has a hole cut into its center of area 4.90870 cm^2 at 20°C , the hole in the plate is to slide over a cylindrical steel shaft of cross sectional area 4.91100cm^2 at 20°C , to what temperature must the brass plate be heated so that it can just slide over the steel cylinder : (alpha;brass =19x^-6/K)

A square brass plate, 8.20 cm on a side , has a hole cut into its center of area 4.90870 cm^2 at 20°C , the hole in the plate is to slide over a cylindrical steel shaft of cross sectional area 4.91100cm^2 at 20°C , to what temperature must the brass plate be heated so that it can just slide over the steel cylinder : (alpha;brass =19x^-6/K)