# Lateral surface

For a cube, the lateral surface area would be the area of four sides. Consider the edge of the cube as $a$. Area of one square face $A_{face} = a \cdot a = a^2$. Thus the lateral surface of a cube will be the area of four faces: $a \cdot a \cdot 4 = 4a^2$. The lateral surface can also be calculated by multiplying the perimeter of the base to the height of the prism. [1]
For a Cylinder, lateral area is the area of the side surface of the cylinder = $2 \pi r h$.