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Volume & Conversion

  1. Aug 29, 2009 #1
    1. The problem statement, all variables and given/known data

    The base of a pyramid covers an area of 20.4 acres (1 acre = 43, 560 ft^2) and has a
    height of 69 ft.

    Find the volume of this pyramid in cubic meters. Answer in units of m3.

    2. Relevant equations

    V of Pyramid= (1/3)bh

    where 'b' is 43,560 ft^2


    3. The attempt at a solution

    My attempt at the solution got me 28370.082 cubic meters after converting.
     
  2. jcsd
  3. Aug 29, 2009 #2

    rock.freak667

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    Don't you mean b= 43,561*20.4 ft2?

    Also how many m= 1 ft?
     
  4. Aug 29, 2009 #3
    Yes thats what i meant. I just redid my solution. Several figures off lol. But please, attempt the problem so i can check my answer

    might i add that the question wants the answer in sigfigs

    also about the conversions. let's just find the answer in cubic feet first. the conversion can be done afterwards
     
    Last edited: Aug 29, 2009
  5. Aug 29, 2009 #4

    rock.freak667

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    I was asking because I didn't know.

    V=1/3*20.4*43560*69

    and according to google 1ft2=0.0283168466 m3

    so I get 578,749.7m3
     
  6. Aug 29, 2009 #5
    thanks thats what i got. this problem was extremely simple i was just exhausted and tried skipping steps foolishly.

    guess its time to close this thread
     
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