The volume of a cube is x cubic feet and its surface area is x area square feet, where x
represents the same number. Find the length of each edge of the cube



Answer :

To solve for the length of each edge of the cube when its volume equals its surface area, we can follow these steps:

1. Let's denote the length of each edge of the cube by [tex]\(a\)[/tex].

2. The formula for the volume [tex]\(V\)[/tex] of a cube is given by:
[tex]\[ V = a^3 \][/tex]

3. The formula for the surface area [tex]\(A\)[/tex] of a cube is given by:
[tex]\[ A = 6a^2 \][/tex]

4. According to the problem statement, the volume is equal to the surface area:
[tex]\[ a^3 = 6a^2 \][/tex]

5. To solve for [tex]\(a\)[/tex], we need to simplify the equation. Let's divide both sides of the equation by [tex]\(a^2\)[/tex]:
[tex]\[ \frac{a^3}{a^2} = \frac{6a^2}{a^2} \][/tex]
Simplifying further:
[tex]\[ a = 6 \][/tex]

Therefore, the length of each edge of the cube is 6 feet.