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Math Help - Depths in different sized molds

  1. #1
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    Depths in different sized molds

    I am pouring liquid into molds.

    My original molds were 1.5"x1.5" and had a depth of .75"

    I poured 3mL into each mold, and the liquid did not come near the .75" depth--I don't know how deep the liquid was once it was poured in, maybe like 1/2 or 1/3 or something.

    I now have different sized molds, but I want to keep the depth of the liquid I pour the same as when I poured it into the smaller molds.

    How do I figure out the volume of liquid to add to the larger molds so that the depth of the liquid remains the same?

    Thanks!
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  2. #2
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    Quote Originally Posted by angicals View Post
    I am pouring liquid into molds.

    My original molds were 1.5"x1.5" and had a depth of .75"

    I poured 3mL into each mold, and the liquid did not come near the .75" depth--I don't know how deep the liquid was once it was poured in, maybe like 1/2 or 1/3 or something.

    I now have different sized molds, but I want to keep the depth of the liquid I pour the same as when I poured it into the smaller molds.

    How do I figure out the volume of liquid to add to the larger molds so that the depth of the liquid remains the same?

    Thanks!
    you're mixing units ... use cm instead of inches because 1 \, cm^3 = 1 \, mL<br />

    if all your molds have a square base, then the volume of liquid is V = s^2h , where s = side length of the square and h is the height the liquid reaches.
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