Vaughan Stewart
08/25/2023 · Senior High School

\( \left[\begin{array}{l}5\left(\frac{1}{2}+\frac{1}{4}\right) m \\ \text { Área }=\end{array}\right. \)

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为了求解这个问题,我们需要计算给定表达式的值。具体步骤如下: 1. **计算括号内的和**: \[ \frac{1}{2} + \frac{1}{4} \] 为了相加这两个分数,我们需要一个共同的分母。这里,最小公倍数是4,所以我们将 \(\frac{1}{2}\) 转换为以4为分母的分数: \[ \frac{1}{2} = \frac{2}{4} \] 现在我们可以相加: \[ \frac{2}{4} + \frac{1}{4} = \frac{3}{4} \] 2. **将括号内的和乘以5m**: \[ 5 \left( \frac{3}{4} \right) m \] 我们将5乘以 \(\frac{3}{4}\): \[ 5 \times \frac{3}{4} = \frac{15}{4} \] 所以,表达式变为: \[ \frac{15}{4} m \] 3. **计算面积**: 根据题目,面积是 \(\frac{15}{4} m\)。 因此,最终答案是: \[ \text{Área} = \frac{15}{4} m \]

Quick Answer

\[ \text{Área} = \frac{15}{4} m \]
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