Match the following shapes with their volumes if each small cube is a cube of volume $1{\text{cm}}^3.$

As each small cube is of volume $1{\text{cm}}^3,$ we can calculate the volume of each shape just by counting the number of unit cubes.


There are four unit cubes in the above shape.
So, the volume of the shape is $4{\text{cm}}^3.$



There are nine unit cubes in the above shape.
So, its volume is $9{\text{cm}}^3.$



There are six unit cubes in the above shape.
So, its volume is $6{\text{cm}}^3.$