The Nature of Mathematics, 12th Edition
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Section 9.1 Homework Hints

    Problems 1-5
    Read this section for formulate in your own mind the meaning of the words, concepts, or formulas requesed in these problems.
    Problems 6-8
    See Figure 9.2; you need to memorize the length of the basic units of measurement, namely the inch and the centimeter.
    Problems 9-28
    These problems are designed to help you estimate distances. Don't be afraid to guess, check, and then revise, if necessary.
    Problems 29-33
    These problems are designed to test your knowledge of the metric system of measurement.
    Problems 34-36
    See Example 1; you will need a ruler to answer these questions.
    Problems 37-40

    For Problems 37 and 38 , the formula for the perimeter of a rectangle is the sum of twice the length and twice the width.

    For Problems 39 and 40 , the formula for the perimeter, P, of an equilateral triangle with side of length s is P = 3s.

    See Example 2.

    Problems 41-43
    The formula for the circumference of a circle is pi times the square of the radius.
    For Problem 43, the perimeter is the distance around a circle (from the ends) plus the distance along each side. See Example 3.
    Problems 44-51

    Trace out the distance around each of the given figures. See Examples 2 and 3.
    Problems 52-54
    Choose the appropriate formula and calculate the answer.  See Example 4.

    Note: Homework Hints are given only for the Level 1 and Level 2 problems.

    However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 problems, check some sources for help on the internet (see the LINKS for that particular section. As a last resort, you can call the author at (707) 829-0606.

    On the other hand, the problems designated "Problem Solving" generally require techniques that do not have textbook examples.

    There are many sources for homework help on the internet.

    Algebra.help
    Here is a site where technology meets mathematics. You can search a particular topic or choose lessons, calculators, worksheets for extra practice or other resources.
    http://www.algebrahelp.com/

    Ask Dr. Math
    Dr. Math is a registered trademark. This is an excellent site at which you can search to see if your question has been previously asked, or you can send your question directly to Dr. Math to receive an answer.
    http://mathforum.org/dr/math/
    Quick Math
    This site provides online graphing calculators. This is especially useful if you do not have your own calculator.
    http://www.quickmath.com/

    The Math Forum @ Drexel
    This site provides an internet mathematics library that can help if you need extra help. For additional homework help at this site, click one of the links in the right-hand column.
    http://mathforum.org/

    Mathematics Home Page
    Access the Clemens and Alcuins Library of CSB/SJU and find one of the world's best collections of mathematical internet sites.
    http://library.csbsju.edu/rqs.phtml?subject_id=32

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