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Homework Help: Density problem

  1. Sep 15, 2008 #1
    1. The problem statement, all variables and given/known data

    A Sheet of aluminum(Al) foil has a total area of 1.000ft^2 and a mass of 3.636g.

    What is the thickness of the foil in millimeters (density of Al=2.699g/cm^3)?

    2. Relevant equations


    3. The attempt at a solution

    1.347=totally wrong... help please
  2. jcsd
  3. Sep 15, 2008 #2


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    1.347 is probably the right answer in some system of units :tongue:

    Also, what is the d in your "relevant equations"? Is it the d for density? Or is it the d that is sometimes used for small distances (such as, say, thickness?) And what is v? How do you calculate it from the given data?

    Your "attempt" is not so much an attempt from which we can clearly locate some error, as some numerical guess, without units or any other relevant information.
  4. Oct 4, 2008 #3
    thank you
  5. Oct 5, 2008 #4


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    You're welcome.
    I take it this means you solved it?
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