Correct. Given $\displaystyle{{s}}^{{3}}={125}\usepackage{cmbright}\Huge\$ , you know that $\displaystyle{\sqrt[{{3}}]{{{{s}}^{{3}}}}}={\sqrt[{{3}}]{{{125}}}}\usepackage{cmbright}\Huge\$ , which equals 5, since $\displaystyle{{5}}^{{3}}={125}\usepackage{cmbright}\Huge\$ .