\[\boxed{\mathbf{6.}}\]
\[\textbf{а)}\ AB = 5\ см\]
\[\textbf{б)}\ KD = 7\ см\ 5\ мм\]
\[\textbf{в)}\ \text{OE} = 3\ см\ 8\ мм\]
\[\textbf{г)}\ \text{SV} = 1\ дм\ 2\ см = 12\ см\]