Volume (cube) = side × side × side
[tex]volume \: = {side}^{3} = {s}^{3} \\ so \: since > \: a \: = side \: \\ and \: Vol = 8000 {ft}^{3} [/tex]
Volume (v) =
[tex] {a}^{3} = 8000 {ft}^{3} \\ \sqrt[3]{ {a}^{3} } = \sqrt[3]{8000 {ft}^{3} } \\ a = 20ft[/tex]
And you can check because 20 × 20 × 20 = 8000, bc 20 × 20 = 400, and 400 × 20 = 8000