Cube surface and volume

Find the surface of the cube with a volume of 27 dm³.

Correct answer:

S =  54 dm²

Step-by-step explanation:

$$\begin{gathered} V=27{\text{dm}}^3 \\ a=\sqrt[3]{V}=\sqrt[3]{27}=3\text{ dm } \\ S=6\cdot a^2=6\cdot 3^2=54{\text{dm}}^2 \end{gathered}$$

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