I interpret the problem as follows: Suppose you have two cones, where the side lenghts of the two cones are related by the ratio 1:2. What then is the ratio of the volumes of the two cones?

In other words, the side lenghts of the second cone are twice as long as the sidelenghts of the first cone. What then is the ratio of the volume of second cone compared to the volume of the first cone?

Then they ask the same question, if the side lenghts of the second cone are n times as long as the sidelenghts of the first cone, where n is some number.