Key learning points

1. The volume of a cone can be found by displacement.
2. Putting a cone into a cylinder filled with water displaces the water.
3. When the cone is removed, the water level drops.
4. The volume of the cone is the difference between the volume of the cylinder and water.
5. There is a formula you can use to calculate the volume of a cone.

Common misconception

Keywords

• Cone - A circular cone is a 3D shape that has a circular base and one curved surface that narrows from the base to a fixed point called the apex/vertex.

• Right cone - A line drawn through the apex and centre of the base of a right circular cone will be perpendicular to the base.

• Volume - Volume is the amount of space occupied by a closed 3D shape.