3 cubes each of side 2cm are joined together. Find the resulting volume.

The correct option is B 24 cubic cm

When three cubes of side 2c m is joined together, it becomes a cuboid of length 6 m , breadth 2 cm and height 2 cm as shown in the figure below.

6 cm

Volume of the cuboid = length $\times$ breadth $\times$ height

= 6 $\times$ 2 $\times$ 2

= 24 $c{m}^3$