(b) A conical solid of diameter 1.5 m and height 2 m was immersed into the river in an inverted position as shown in Figure 2(b). The density of the water in the river was 1000 kg/m. If the base of cone was exposed 500 mm in height over the water surface, find the density of the cone. (10 marks) DI 1.5 m 500 mm River Figure 2(b) 2 m