Question

find the surface area of the cube shown below. units²

Explanation:

Step1: Recall surface - area formula

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

Step2: Identify side - length

The side - length of the given cube $s = 2\frac{1}{2}=\frac{5}{2}$ units.

Step3: Substitute into formula

$SA=6\times(\frac{5}{2})^{2}=6\times\frac{25}{4}=\frac{150}{4} = 37.5$ square units.

Answer:

$37.5$