Question

a cube has an edge measuring 4 inches. what is the surface area of the cube, in inches²?

Explanation:

Step1: Recall surface - area formula

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

Step2: Substitute the value of $a$

Given $a = 4$ inches. Substitute $a = 4$ into the formula: $S=6\times4^{2}$.

Step3: Calculate the result

First, calculate $4^{2}=16$. Then, $6\times16 = 96$.

Answer:

96