\[1)\ 2\frac{4^{\backslash 6}}{7} - \frac{31}{42} = 2\frac{24}{42} - \frac{31}{42} =\]
\[= 1\frac{66}{42} - \frac{31}{42} = 1\frac{35}{42} = 1\frac{5}{6}\ (м) -\]
\[другая\ сторона.\]
\[2)\ 2\frac{4}{7} \cdot 1\frac{5}{6} = \frac{18 \cdot 11}{7 \cdot 6} = \frac{33}{7} =\]
\[= 4\frac{5}{7}\ \left( м^{2} \right) - площадь\ \]
\[прямоугольника.\]
\[Ответ:4\frac{5}{7}\ м^{2}.\]