The volume of a right circular cone is 5 litres. Calculate the volume of the two parts into which the cone is divided by a plane parallel to the base , one-third of the way down from the vertex to the base . Give your answers to the nearest ml

since the two cones are similar, the volume of the small cone is (1/3)^3 = 1/27 the volume of the original cone. So the volumes of the two pieces are 1/27 of 5000 ml and 26/27 of 5000 ml.

Does this help??