Answer: [tex]54\ ft^3[/tex]
Step-by-step explanation:
Given
The base side of the box is 3 ft long
The height of the box is 6 ft
For the square base, length and width is the same
Volume of rectangular prism is [tex]V=l\times w\times h[/tex]
Putting the values
[tex]\Rightarrow V=3\times 3\times 6\\\Rightarrow V=54\ ft^3[/tex]
The volume of the box is [tex]54\ ft^3[/tex]