Question

The surface area of a cube of side 'x' What is the equation?

Answer 1

The total surface area of the cube is $6x^2$

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:

$A_1 = x\cdot x = x^2$

Since we have 6 faces, the total surface area of the cube will be

$A=6A_1$

And therefore,

$A=6x^2$

So, this is the total surface area of the cube.

Learn more about area and volume of solids:

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