Calculate Cube Surface Area and Volume

Published on May 6, 2026

Geometry

Learn how to calculate the area of one face, the number of faces, and the total surface area of a cube with side length 5 cm.

Question

Answer

The problem asks us to consider a cube with side length 5 cm and answer three questions about it.
Part a) asks to find the area of one face of the cube.
A cube has square faces. The area of a square is given by the formula .
In this case, the side length of the cube is 5 cm.
So, the area of one face is .
Part b) asks how many faces a cube has.
A cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex.
Therefore, a cube has 6 faces.
Part c) asks for the total surface area of the cube.
The total surface area of a cube is the sum of the areas of all its faces. Since a cube has 6 identical faces, and the area of one face is (from part a), the total surface area is:


.
The final answer is .