\[\boxed{\mathbf{Страница}\mathbf{\ \ 49}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\boxed{\mathbf{11}\mathbf{.}\mathbf{\ }}\]
\[42\ :7\] | \[56\ :8\] | \[63\ :7\] | \[42\ :6\] | \[35\ :7\] | \[14\ :2\] | \[49\ :7\] | \[28\ :4\] | \[21\ :7\] |
---|---|---|---|---|---|---|---|---|
\[6\] | \[7\] | \[9\] | \[7\] | \[5\] | \[7\] | \[7\] | \[7\] | \[3\] |
\[\boxed{\mathbf{12}\mathbf{.}\mathbf{\ }}\]
\[\boxed{\mathbf{13}\mathbf{.}\mathbf{\ }}\]
\[P = 2 \cdot (3 + 4) = 14\ см.\]
\[S = 3 \cdot 4 = 12\ см^{2}.\]
\[S = 6 \cdot 2 = 12\ см^{2}.\]
\[S = 12 \cdot 1 = 12\ см^{2}.\]
\[\boxed{\mathbf{14}\mathbf{.}\mathbf{\ }}\]
\[\boxed{4 \cdot 5 = 20} \Longrightarrow \boxed{4 \cdot 6 = 24} \Longrightarrow\]
\[\Longrightarrow \boxed{4 \cdot 7 = 28} \Longrightarrow \boxed{4 \cdot 8 = 32} \Longrightarrow\]
\[\Longrightarrow \boxed{4 \cdot 9 = 36}\]