Questions: Find the surface area of this cube. Be sure to include the correct unit in your answer.

Find the surface area of this cube. Be sure to include the correct unit in your answer.
Transcript text: Find the surface area of this cube. Be sure to include the correct unit in your answer.
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Solution

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Solution Steps

Step 1: Find the area of one face

The cube has sides of length 9 cm. The area of one face of the cube is $9 \text{ cm} \times 9 \text{ cm} = 81 \text{ cm}^2$.

Step 2: Find the total surface area

A cube has 6 faces. So the total surface area is $6 \times 81 \text{ cm}^2 = 486 \text{ cm}^2$.

Final Answer

486 cm²

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