The total surface area of the cube is
Step-by-step explanation:
Here we want to find an expression for the surface area of a cube if side x.
First of all, we notice that the cube consists of 6 equal faces; each face is a square, so the area of each face is the area of a square of side x, therefore:
Since we have 6 faces, the total surface area of the cube will be
And therefore,
So, this is the total surface area of the cube.
Learn more about area and volume of solids:
#LearnwithBrainly