Часть 2 страница 8, ГДЗ по математике за 4 класс к рабочей тетради Дорофеева
Центнер и тонна
\[\begin{array}{rclrcl} \text{зебра} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{ц}} & \quad \text{мышь} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{г}} \\[8pt] \text{заяц} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{кг}} & \quad \text{медведь} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{ц}} \\[8pt] \text{корова} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{ц}} & \quad \text{жук} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{г}} \\[8pt] \text{слон} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{т}} & \quad \text{птичка} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{г}} \\[8pt] \text{бегемот} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{\text{т}} \end{array}\]
\[\begin{aligned} 98\text{ кг} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 100\text{ кг}}}{1\text{ ц}} & \qquad 980\text{ кг} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 9\,800\text{ кг}}}{98\text{ ц}} & \qquad \overset{\textcolor{#808080}{\scriptstyle 908\,000\text{ г}}}{9\text{ ц }8\text{ кг}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 9\,008\text{ г} \\ 908\text{ ц} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 10\text{ ц}}}{1\text{ т}} & \qquad 9\,800\text{ г} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 98\,000\text{ г}}}{98\text{ кг}} & \qquad 980\text{ г} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 1\,000\text{ г}}}{1\text{ кг}} \end{aligned}\]
\(1)\ 8 \cdot 23 = \textcolor{#e03131}{\mathbf{184}}\text{ (м)}\)
\(2)\ P = (184 + 8) \cdot 2 = \textcolor{#e03131}{\mathbf{384}}\text{ (м)}\)
\(3)\ S = 184 \cdot 8 = \textcolor{#e03131}{\mathbf{1\,472}}\text{ (м}^2\text{)}\)
Ответ: периметр \(\textcolor{#e03131}{\mathbf{384}}\) м, площадь \(\textcolor{#e03131}{\mathbf{1\,472}}\) м².
