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Math Help - [SOLVED] Density question

  1. #1
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    [SOLVED] Density question

    Help! My 6th grade daughter has asked for help with this, and I can't even figure it out!

    A sample of iron has the dimensions of 2 cm x 3 cm x 2 cm. If the mass of this rectangular-shaped object is 94 g, what is the density of iron?

    Okay, I know the formula is D=M/V, but wouldn't I need the height of the triangle in order to determine the area first? Please help! I am lost!
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  2. #2
    Member arpitagarwal82's Avatar
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    volume of block can be calculated as 2 x 3 x 3 cm^3
    = 18 cm^3

    Mass is 94g
    so density = M/V = 94/18 g/cm^3
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  3. #3
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    Oh, is my face red!!!! I kept thinking this was a triangle! That's why I thought I needed the height! I have been busting my brain over this for hours, and the only problem was that I was misreading it. Even after I typed the question into the forum post, I still didn't catch it. When you typed the word "block," that did it for me! Thank you so much! It's either getting really late, or I'm getting really old!!!!
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