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Math Help - Need help finding a dimension.

  1. #1
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    Need help finding a dimension.

    The question:

    The density of aluminum is 2.70 g/cm^3. Calculate the thickness of a rectangular sheet of aluminum foil with a width of 11.5cm, a length of 14.0cm, and a mass of 2.04g.

    Please show me how this is solved. Thanks in advance.
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  2. #2
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by halpo View Post
    The question:

    The density of aluminum is 2.70 g/cm^3. Calculate the thickness of a rectangular sheet of aluminum foil with a width of 11.5cm, a length of 14.0cm, and a mass of 2.04g.

    Please show me how this is solved. Thanks in advance.
    Recall: d=\frac{m}{v} or d=\frac{m}{L\cdot{W}\cdot{T}}

    You were given:
    d=2.70

    W=11.5

    L=14.0

    m=2.04

    So, finish up.
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  3. #3
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    So,

    (2.70) = (2.04 / 161T)

    (2.70)(161T) = 2.04

    434.7T = 2.04

    T = (2.04 / 434.7)

    T = .004693cm = .047mm

    Are these steps (and the answer) correct? Thanks for the help.
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  4. #4
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by halpo View Post
    So,

    (2.70) = (2.04 / 161T)

    (2.70)(161T) = 2.04

    434.7T = 2.04

    T = (2.04 / 434.7)

    T = .004693cm = .047mm

    Are these steps (and the answer) correct? Thanks for the help.
    Correct!
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