Incorrect. You are given $\displaystyle{a}={12}\usepackage{cmbright}\Huge\$ and $\displaystyle{b}={16}\usepackage{cmbright}\Huge\$ . The Pythagorean Theorem says $\displaystyle{{c}}^{{2}}={{a}}^{{2}}+{{b}}^{{2}}\usepackage{cmbright}\Huge\$ , so $\displaystyle{{c}}^{{2}}={{12}}^{{2}}+{{16}}^{{2}}\usepackage{cmbright}\Huge\$ . Can you figure out what c equals?