1) A candle, made from wax, is in the shape of a cylinder.
 The radius is 1.5 centimetres and the height
 is 20 centimetres.
 (a) Calculate, correct to the nearest
 cubic centimetre,
 the volume of wax in the candle.
 [The volume of a cylinder, radius r, height h, is r²h]
 1.5 cm
 9A
 20 cm