Answer:
The hardwood will cost $1620
Explanation:
The room is a cube with volume of 5832 ft^3
This means we have for a cube foot:
[tex]\begin{gathered} 18\text{ft }\times\text{ 18ft }\times\text{ 18ft} \\ =5832ft^3 \end{gathered}[/tex]So, for a square foot, we have:
[tex]\begin{gathered} 18\text{ft }\times\text{ 18ft} \\ =324ft^2 \end{gathered}[/tex]The hardwood will then cost:
324 * $5 = $1620
