9.6.3: Formula Review
9.1 The Metric System
You can convert between unit sizes with the same base unit using the conversion factors shown in Figure 9.4.
9.2 Measuring Area
To determine the area of rectangular-shaped objects:
\[\text { Area }=\operatorname{length}(l) \times \operatorname{width}(w) \nonumber \]
\[\begin{array}{c}
\text { or } \\
A=l \times w
\end{array} \nonumber \]
You can convert between metric area units using the conversion factors shown in Figure 9.7.
9.3 Measuring Volume
To determine the volume of a rectangular prism:
\[\begin{array}{c}
\text { Volume }=\text { length }(l) \times \operatorname{width}(w) \times \text { height }(h) \\
\text { or } \\
V=l w h
\end{array} \nonumber \]
You can convert between metric volume units and metric capacity units using the relationships shown in Table 9.2.
9.4 Measuring Weight
You can convert between metric weight units using the conversion factors shown in this Table
9.5 Measuring Temperature
To convert temperature from Fahrenheit to Celsius:
\[C=\frac{5}{9}(F-32) \nonumber \]
To convert temperature from Celsius to Fahrenheit:
\[F=\frac{9}{5} C+32 \nonumber \]
To estimate temperature from Fahrenheit to Celsius:
\[C=\frac{F-30}{2} \nonumber \]
To estimate temperature from Celsius to Fahrenheit:
\[F=2 C+30 \nonumber \]