A 75kg surfer is paddling out on a 10.5ft wooden longboard withdensity 167kg/m3 . Seawater has specific gravity of 1.03. Assumingnone of the surfer is submerged at the moment, how much of thesurfboards 7cm thickness is submerged? You may assume the board isperfectly flat and the surfer has reached behind the breaks wherethe ocean is calm.
width of board not given
