What is the volume of a cube with side a? What is the surface area of a cube with side a?

What is the volume of a cube with side a? What is the surface area of a cube with side a? What is the volume of a rectangular parallelepiped if its dimensions are a, b, c? What is the area of a rectangular parallelepiped if its dimensions are a, b, c?

The volume V of a cube with side a will be the length of this side in the cube.

V = a ^ 3;

The area S of the surface of a cube is the sum of the areas of each plane of the cube, and there are 6 of them. Each of them is a square: the area will be equal to a ^ 2.

S = 6 * a2;

The volume V of a rectangular parallelepiped with length a, height b, width c will be their product.

V = a * b * c;

The surface area will be equal to the sum of the areas of each plane. There are 6 of them, but they are equal in pairs. a * b, b * c, a * c are the areas of their area.

S = 2 * (a * b + b * c + a * c).