솔루션피아

$$ \begin{aligned} & 2.0\ut{h} \\ =& 2.0\ut{h} \cdot \frac{3600\ut{s}}{1\ut{h}}\cdot \frac{24.0\ut{EA}}{1.0\ut{s}} \\ =& \frac{2.0 \cdot 3600 \cdot 24}{1\cdot 1}\ut{EA} \\ =& 172800\ut{EA} \\ \approx& 1.7\times 10^{5}\ut{EA} \end{aligned} $$

$$\begin{cases} 12 \ut{Point}=1 \ut{pica}\\ 6 \ut{pica}=1 \ut{inch}\\ 1 \ut{inch} = 2.540\ut{cm}\\ \end{cases} $$ (a) $$ \begin{aligned} 0.70\ut{cm} =& 0.70\ut{cm} \times \(\frac{1 \ut{inch}}{2.540\ut{cm}}\)\times \(\frac{6 \ut{pica}}{1 \ut{inch}}\)\\ =&\frac{210}{127}\ut{pica}\\ \approx&1.65354330709\ut{pica}\\ \approx&1.65\ut{pica} \end{aligned} $$ (b) $$ \begin{aligned} 0.70\ut{cm} =& 0.70\ut..

$$ \begin{aligned} & 1.0\ut{mi/h} \\ =& \frac{1\ut{mi}}{1\ut{h}} \cdot \frac{1609\ut{m}}{1\ut{mi}}\cdot \frac{1\ut{h}}{3600\ut{s}} \\ =& \frac{1\cdot1609\cdot1}{1\cdot1\cdot3600}\ut{m/s} \\ \approx& 0.4469444444444444 \ut{m/s} \\ \approx& 0.45 \ut{m/s} \end{aligned} $$

$$ \begin{aligned} & 0.75\ut{gry^2} \\ =& 0.75\ut{gry^2} \(\frac{1\ut{line}}{10\ut{gry}}\)^2 \(\frac{1\ut{inch}}{12\ut{line}}\)^2 \(\frac{72\ut{Point}}{1\ut{inch}}\)^2 \\ =& \frac{0.75\cdot 1^2\cdot 1^2\cdot 72^2}{10^2\cdot12^2\cdot 1^2}\ut{Point^2} \\ =& \frac{27}{100}\ut{Point^2} \\ =& 0.27\ut{Point^2} \end{aligned} $$

$$ \begin{aligned} & 14.0\ut{gal} \\ =& 14.0\ut{gal}\(\frac{231\ut{inch^3}}{1\ut{gal}}\)\(\frac{2.540\ut{cm}}{1\ut{inch}}\)^{3}\( \frac{1\ut{L}}{10^{3}\ut{cm^3}} \) \\ =& \frac{14.0\cdot231\cdot2.540^{3}\cdot1}{1\cdot1\cdot10^{3}}\ut{L} \\ =& \frac{3312235311}{62500000}\ut{L} \\ \approx& 52.995764976\ut{L} \\ \approx& 53.0\ut{L} \end{aligned} $$