Answer:
[tex]\boxed{\text{4 ft}}[/tex]
Step-by-step explanation:
The formula for the volume of a cube is
V = l³
where l is the length of a side.
[tex]\begin{array}{rcl}\text{64 ft}^{3}& =&l^{3}\\\sqrt[3]{ \text{64 ft}^{3}} & = & l\\l & = & \textbf{4 ft}\\\end{array}[/tex]
[tex]\text{The length of one side is $\boxed{\textbf{4 ft}}$}[/tex]
