The Cross sectional area of cube is defined as the area of a face which is the face when you cut the cube parallel and perpendicular to the faces. This page contains the cross sectional area of cube formula to calculate the CSA of cube. As per this CSA of cube formula, cross sectional area can be determined by just squaring the measurement of length. Since the faces of the cube is a square and all the sides are squares, the length of the side is the length of a cube.
The CSA of cube formula is just a simple formula which guides you to calculate the cross sectional area of a cube with a simple squaring operation.