The formula for the volume of a cube is;
[tex]V_{cube}=l^3[/tex]We are told that the volume of the cube is 64 cubic inches, so the length of a side is given by;
[tex]\begin{gathered} 64=l^3 \\ \text{therefore} \\ l=64^{\frac{1}{3}} \\ l=4in \end{gathered}[/tex]Therefore, the length of one edge of the cube is 4 inches. Option A
