b) A hemispherical bowl has a diameter of '12 cm and contains water to a depth of h cm as shown in Figure 1. Water is poured into the bowl at a rate of 5 cm3 per second. Determine how fast is the water level rising when the water level is 2 cm from the bottom of the bowl. [Hint :1! =26 (24 11]]. Figure '1 (5 marks}