It was reported that while this question was also popular among the candidates, their performance was poorer than it was in Questions 1 and 2.  It was reported that poor understanding as well as poor application of the formulae was observed among some candidates.
In part (a), candidates did not equate the volume of the cone to that of a cube correctly as expected. Some others wrongly used the value for the diameter as of the radius of the cone. It was also reported that some candidates did not write their final answer to the required degree of accuracy. Candidates were expected to obtain the volume of the cube and equate it to that of a cone as l3 = r2h. i.e. 43 =  h, where h is the height of the cone. Therefore,         h =  = 5 cm to the nearest centimeter.
In part (b), candidates were expected to find the angle, (say, x), subtended by the arc at the centre of the circle and use it to calculate the required area i.e. 36 = . Therefore, x =  =
Area =  x  x 142 =  = 252 cm2.