\[\boxed{\mathbf{264.}}\]
\[\textbf{а)}\ \sqrt{25} = 5\]
\[\textbf{б)}\ \sqrt{0,36} = 0,6\]
\[\textbf{в)}\ \sqrt{0,04} = 0,2\]
\[\textbf{г)}\ \sqrt{2,89} = 1,7\ \]