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anonymous

  • one year ago

Can someone please help me with this problem? Thanks! :)

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  1. triciaal
    • one year ago
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    question/problem?

  2. anonymous
    • one year ago
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    It's in the attachment!

  3. welshfella
    • one year ago
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    i cant see any attachment

  4. anonymous
    • one year ago
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    The conical tank below is filled with liquid. How much liquid has poured from the top of the cone if the water level is 9 feet from the tip? Radius=4 ft Height=12 ft A) 67pi ft^3 B) 57 pi ft^3 C) 47pi ft^3 D) 37pi ft^3 E) 27pi ft^3

  5. welshfella
    • one year ago
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    |dw:1438356099057:dw|

  6. welshfella
    • one year ago
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    |dw:1438356185212:dw|

  7. welshfella
    • one year ago
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    basically here we have 2 cones and the amount of liquid pored out is the difference in volumes of the large and small cones

  8. welshfella
    • one year ago
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    Volume of large cone = 1/3 pi r^2 h = (1/3) pi 4^2 * 12 Now we need to find the radius of the small cone can you do that?

  9. anonymous
    • one year ago
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    How would you do that?

  10. welshfella
    • one year ago
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    |dw:1438356403629:dw|

  11. anonymous
    • one year ago
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    Ah....I get it now! So after setting up a ratio proportion, I can subtract the volume of the smaller cone from that of the larger cone, right?

  12. welshfella
    • one year ago
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    yes

  13. welshfella
    • one year ago
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    9 /12 = x /8

  14. anonymous
    • one year ago
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    Ok! Thank you so much for your help! I really appreciated it!

  15. triciaal
    • one year ago
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    I think the first sketch is correct 9 ft from the top

  16. welshfella
    • one year ago
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    x would be the diameter so you need to half that to get radius to work out the volume

  17. welshfella
    • one year ago
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    - oh yea - i took the tip to mean the point of the cone

  18. welshfella
    • one year ago
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    if you dont get one of the options the you'll have to change the values

  19. anonymous
    • one year ago
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    ok...got it! thanks for the reminder!

  20. triciaal
    • one year ago
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    so sorry I read top

  21. welshfella
    • one year ago
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    - yes - I thought it was top too

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