Learn about 3D shapes and their properties. Properties of 3D shapes Learn about faces, edges and vertices. What is volume? Find out how the volume of a 3D shape can be calculated by counting cubes.

Total volume of the salt shaker = volume of cylinder + volume of hemisphere. Volume of cylinder = \( \pi r^2 h = \pi \times 1.5^2 \times 5\) A hemisphere is half a sphere. Volume of a hemisphere = ...

Since its discovery, graphene, a 2D layer of carbon molecules, has taken the title of the strongest material in existence. But how to turn it into a 3D material that could be used for projects like ...