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Unofficialllyy

  • one year ago

can someone please help?

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  1. Unofficialllyy
    • one year ago
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    A company that manufactures storage bins for grains made a drawing of a silo. The silo has a conical base, as shown below: Which of the following could be used to calculate the total volume of grains that can be stored in the silo?

  2. DanJS
    • one year ago
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    If i am picturing the thing right, it is the vvolume of a cylinder plus the volume of the cone

  3. DanJS
    • one year ago
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    |dw:1437755024017:dw|

  4. Unofficialllyy
    • one year ago
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  5. DanJS
    • one year ago
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    Yes Total Volume = Volume Cylinder + Volume Cone

  6. DanJS
    • one year ago
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    Cylinder - height = 8 ft , radius = 2 ft Cone - height = 1.5 ft, radius = 2 ft

  7. Unofficialllyy
    • one year ago
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    I got \[\pi(2ft)^2(8ft)+\frac{ 1 }{ 3 } \pi(2ft)^2(9.5ft-8ft)\]

  8. DanJS
    • one year ago
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    \[Volume = [\pi*r^2*h _{cyl}] + [\frac{ 1 }{ 3 }\pi*r^2*h _{cone}]\]

  9. DanJS
    • one year ago
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    yep, looks good

  10. Unofficialllyy
    • one year ago
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    Could you help me with some more?

  11. DanJS
    • one year ago
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    sure

  12. Unofficialllyy
    • one year ago
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    What is the weight (in grams) of a liquid that exactly fills a 202.0 milliliter container if the density of the liquid is 0.685grams over milliliter? Round to the nearest hundredth when necessary and only enter numerical values, which can include a decimal point.

  13. DanJS
    • one year ago
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    weight = newtons, mass= grams.

  14. DanJS
    • one year ago
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    nvm

  15. DanJS
    • one year ago
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    Given: Volume = 202.0 mL Density = 0.685 g / mL Find: mass [g]

  16. DanJS
    • one year ago
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    Density = mass / volume so mass = density * volume

  17. Unofficialllyy
    • one year ago
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    I'm really confused lol

  18. DanJS
    • one year ago
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    Just remember, the density is a mass per unit of volume Density = mass / volume

  19. DanJS
    • one year ago
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    multiplying both sides by volume mass = volume x density

  20. Unofficialllyy
    • one year ago
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    I got 138.37

  21. DanJS
    • one year ago
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    |dw:1437755681677:dw|

  22. DanJS
    • one year ago
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    right

  23. Unofficialllyy
    • one year ago
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    I have one more that I need help with.

  24. DanJS
    • one year ago
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    sure

  25. Unofficialllyy
    • one year ago
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    A cone has a diameter of 8 centimeters and a height that is 4 times the diameter. Using 3.14 for pi, which of the following can be used to calculate the volume of the cone?

  26. anonymous
    • one year ago
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    i agree with you because you work really explains well

  27. DanJS
    • one year ago
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    v = (1/3) * pi * r^2 * h

  28. DanJS
    • one year ago
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    diameter = 8, so radius = 4 height = 4*diameter = 4*8 = 32

  29. Unofficialllyy
    • one year ago
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    My answer is: \[\frac{ 1 }{ 3 }(3.14)(8cm)^2(32cm)\]

  30. DanJS
    • one year ago
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    yep, and as a check, your units come out to cm^3 which is correct for a Volume

  31. anonymous
    • one year ago
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    yep

  32. Unofficialllyy
    • one year ago
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    thank you so much!

  33. DanJS
    • one year ago
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    no prob , anytime

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