Question

use the net to find the surface area of the cube. 12 m 12 m 12 m 12 m 12 m a 720 m² b 168 m² c 864 m² d 432 m²

Explanation:

Step1: Recall surface - area formula for cube

The surface area of a cube $S = 6a^{2}$, where $a$ is the side - length of the cube.

Step2: Identify the side - length

The side - length of the given cube $a = 12$ m.

Step3: Calculate the surface area

Substitute $a = 12$ into the formula: $S=6\times12^{2}=6\times144 = 864$ m².

Answer:

C. $864$ m²