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Math Help - Chemistry Equation Problem

  1. #1
    Junior Member
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    Find the radius of an aluminum cylinder that is 2.00 cm long and has a mass of 12,4 g. For a cylinder, V=πr^2h

    Thank you


    Would I just need to find the density of aluminum at room temperature?
    Last edited by mr fantastic; January 18th 2010 at 12:41 AM. Reason: Merged posts
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  2. #2
    MHF Contributor
    Grandad's Avatar
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    Hello thebristolsound
    Quote Originally Posted by thebristolsound View Post
    Would I just need to find the density of aluminum at room temperature?
    Yes, you will certainly need the density. Then use:
    \text{volume }= \frac{\text{mass}}{\text{density}}
    When you have the volume, solve the equation
    V = \pi r^2h
    for r; namely:
    r =\sqrt{\frac{V}{\pi h}}
    Can you do it now?

    Grandad
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