The bottom of a steel "boat" is a 7 m ✕ 8 m ✕ 5 cm piece of steel (ρsteel = 7900 kg/m3). The sides are made of 0.480 cm thick steel. What minimum height must the sides have for this boat to float in perfectly calm water? The side height should not include the thickness of the bottom. (Answer in cm, thanks)

The bottom of a steel "boat" is a 7 m ✕ 8 m ✕ 5 cm piece of steel (ρsteel = 7900 kg/m3). The sides are made of 0.480 cm thick steel. What minimum height must the sides have for this boat to float in perfectly calm water? The side height should not include the thickness of the bottom. (Answer in cm, thanks)