Fig. 1.1 shows a diver working below the surface of a lake. The density of the water in the lake is 1030 kg / m 3 , the atmospheric pressure at the surface is 1.0 × 10 5 Pa and the gravitational field strength is 10 N / kg. The diver inflates a balloon with air at a depth of 25 m and attaches the balloon to a tray of objects. Calculate (i) the pressure due to 25 m of water,