\[\boxed{\text{6.13.}}\]
\[Единичный\ отрезок\ равен\ \]
\[10\ клеткам.\ \]
\[\text{P\ }(0,9);\ K\ (1,9);\ M\ (0,4);\ \]
\[\text{D\ }(1,2)\text{.\ }\]
\[\textbf{а)}\ OM = 0,4;\ \]
\[\textbf{б)}\ PK = 1;\ \]
\[\textbf{в)}\ DO = 1,2;\ \]
\[\textbf{г)}\ MD = 0,8.\ \ \ \]