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Math Help - Perimeter/Area word problems

  1. #1
    Newbie
    Joined
    Feb 2010
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    Perimeter/Area word problems

    I feel so stupid for even asking these two questions right now...but I feel like I'm missing something.

    1. The perimeter of a rectangle is 72 centimeters. The base is 3 times the height. What are the dimensions of the rectangle? What is the area?

    I was thinking is went something like this: 72 = 3x + x
    Height = x
    Base = 3x

    What am I doing wrong?

    2. The area of a rectangle is 27 square feet. The base is 3 more than twice the height. What are the dimensions of the rectangle? What is the perimeter?

    Base = 3 + 2x
    Height = x

    Same thing...but I'm still getting it wrong...
    Any help would be appreciated. Thanks.
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  2. #2
    MHF Contributor
    Joined
    Apr 2008
    Posts
    1,092
    1. For the first question, remember that your rectangle has four sides, two of length x and two of length 3x.

    2. You got the idea. Now solve x(2x + 3) = 27.
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  3. #3
    Newbie
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    Ok, thanks man!
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