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Sunshine447

  • 3 years ago

The small pipe has a radius of 16 feet and a height of 48 feet while the large pipe has a height of 60 feet. What is the volume of the large pipe in terms of π? http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0806_04/image0034e847d9e.gif

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  1. Faris_Waleed
    • 3 years ago
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    First of all you know that the formula for calculating the volume of a cylinder is: V=pi*r(square)*height

  2. Sunshine447
    • 3 years ago
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    yeah

  3. Faris_Waleed
    • 3 years ago
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    OK, you have the radius and height for the small pipe and the height for the large pipe but you don't have the radius you need in order to calculate the volume, understood till here now?

  4. Faris_Waleed
    • 3 years ago
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    Did you understand ?

  5. Sunshine447
    • 3 years ago
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    u have to make a ratio, right?

  6. Faris_Waleed
    • 3 years ago
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    Yes like this: Height in the small pipe / Height in the large pipe = Radius in the small pipe / Radius in the large pipe

  7. Faris_Waleed
    • 3 years ago
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    Height in the small pipe = 48 cm Height in the large pipe= 60 cm Radius in the small pipe = 16 cm Radius in the large pipe= xcm Understood till here now?

  8. Faris_Waleed
    • 3 years ago
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    Now solve for x which will give you the radius of the large pipe

  9. Sunshine447
    • 3 years ago
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    cross multiply?

  10. Faris_Waleed
    • 3 years ago
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    yes

  11. Sunshine447
    • 3 years ago
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    okay, hold on

  12. Sunshine447
    • 3 years ago
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    12.8?

  13. Sunshine447
    • 3 years ago
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    wait... its 20

  14. Faris_Waleed
    • 3 years ago
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    Look, 16/x = 48/60 16*60*48*x 960=48x x=960/48 x=20

  15. Sunshine447
    • 3 years ago
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    so, then i multiply 20 by height?

  16. Sunshine447
    • 3 years ago
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    @Faris_Waleed

  17. Sunshine447
    • 3 years ago
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    @AccessDenied

  18. Faris_Waleed
    • 3 years ago
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    Yes you use the cylinder formula to calculate its volume

  19. Sunshine447
    • 3 years ago
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    i got 1200..... but that's not a choice...

  20. Sunshine447
    • 3 years ago
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    @CliffSedge

  21. CliffSedge
    • 3 years ago
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    What is the radius of the large pipe?

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