Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo

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:

Area=length (l)×width (w) Area=length (l)×width (w)

or A=l×wor A=l×w
A rectangle with its longest side marked the length and the shortest side marked the width.
Figure 9.16 Rectangle with Length (l)(l) and Width (w)(w) Labeled

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:

Volume= length (l)×width (w)×height(h)Volume= length (l)×width (w)×height(h)
orV=lwhorV=lwh
A rectangular prism with its length, width, and height marked l, w, and h.
Figure 9.17 Rectangular Prism with Height (h)(h), Length (l)(l), and Width (w)(w) Labeled

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 Figure 9.13.

9.5 Measuring Temperature

To convert temperature from Fahrenheit to Celsius:

C=59(F32)C=59(F32)

To convert temperature from Celsius to Fahrenheit:

F=95C+32F=95C+32

To estimate temperature from Fahrenheit to Celsius:

C=F302C=F302

To estimate temperature from Celsius to Fahrenheit:

F=2C+30F=2C+30
Citation/Attribution

This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:
    Access for free at https://openstax.org/books/contemporary-mathematics/pages/1-introduction
  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:
    Access for free at https://openstax.org/books/contemporary-mathematics/pages/1-introduction
Citation information

© Jul 25, 2024 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.