Question

what is the surface area of the cube? 28 mm 28 mm 28 mm square millimeters submit

Explanation:

Step1: Recall surface - area formula

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

Step2: Identify side - length value

Here, $a = 28$ mm.

Step3: Calculate surface area

Substitute $a = 28$ into the formula: $S=6\times28^{2}=6\times784 = 4704$ $mm^{2}$.

Answer:

4704