Question

find the surface area of this cube. be sure to include the correct unit in your answer. 9 in 9 in 9 in

Explanation:

Step1: Find area of one face

A cube's face is a square. Area of square: $\text{side}^2 = 9^2 = 81$ $\text{in}^2$

Step2: Multiply by 6 (total faces)

A cube has 6 identical faces. Total surface area: $6 \times 81 = 486$ $\text{in}^2$

Answer:

486 $\text{in}^2$