Question

a cube is shown below. which diagram is a net for the cube? what is the surface area of the cube? square inches

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 $s = 9$ inches.

Step3: Calculate surface area

Substitute $s = 9$ into the formula: $SA=6\times9^{2}=6\times81 = 486$ square inches.

Answer:

486