Which of the following statements about volume and/or capacity is not true?

Solid objects always have volume and capacity.

Capacity can be measured in litres.

Volume is measured in cubed units.

Volume is the amount of three-dimensional space occupied by an object

Solid objects always have volume and capacity. This statement is not true as capacity is specific to containers or objects that can hold or contain something. Objects such as rocks or buildings may have volume but not capacity.