Cone paper is the knowledge learned in the second volume of mathematics in the sixth grade of primary school by People's Education Press. The textbook of People's Education Edition for Primary Schools has been used since 195 1

The volume of a cone is learned on the basis of a cylinder. The volume of a cylinder with equal base and equal height is three times that of a cone, and the volume of a cone with equal base and equal height is 1/3 of that of a cylinder.