This is a 2D cube the length is 14cm and the width id 4cm so if we multiply the 14cm and the 4 cm we will get 56cm2.
The next one is a 3D shape the width of this 3D shape is 3cm3.
The length of this shape is 4cm3.
The height of this 3D shape is 14cm3.
So if we multiply the width of the 3D shape, The length of the 3D shape and also the height of the 3D shape. So that will be 14cmx3cmx14cm = 588.