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Homework Help: I Need Some Help: Equation Given

  1. Sep 15, 2007 #1
    I have a problem. I have to find the Volume of a group beans. Now I measured the bean's diameter, but I wasn't able to get Volume in the lab. Is there a way to get it?

    The equation to find volume is V = (pi)r^2h... (pi times r squared, times H).
    Volume of a solid is cm^3.

    There are two variables missing, V and h. Now the diameter I have is 15.5cm... so the radius is 7.75cm.

    So I have V = 3.14 * 7.75^2 * h

    Is it possible to find the other two varibles?
  2. jcsd
  3. Sep 15, 2007 #2
    I know it might sound really dumb but if you've got a decently large and decently measured measuring cup fill it about half full with water and plop it in there and find the change in volume and convert it to cubic centimeters. Other then that find some other way to measure the height?
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