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Sunshine447 Group Title

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

  • 2 years ago
  • 2 years ago

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  1. Faris_Waleed Group Title
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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 years ago
  2. Sunshine447 Group Title
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    yeah

    • 2 years ago
  3. Faris_Waleed Group Title
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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?

    • 2 years ago
  4. Faris_Waleed Group Title
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    Did you understand ?

    • 2 years ago
  5. Sunshine447 Group Title
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    u have to make a ratio, right?

    • 2 years ago
  6. Faris_Waleed Group Title
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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

    • 2 years ago
  7. Faris_Waleed Group Title
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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?

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

    • 2 years ago
  9. Sunshine447 Group Title
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    cross multiply?

    • 2 years ago
  10. Faris_Waleed Group Title
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    yes

    • 2 years ago
  11. Sunshine447 Group Title
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    okay, hold on

    • 2 years ago
  12. Sunshine447 Group Title
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    12.8?

    • 2 years ago
  13. Sunshine447 Group Title
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    wait... its 20

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

    • 2 years ago
  15. Sunshine447 Group Title
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    so, then i multiply 20 by height?

    • 2 years ago
  16. Sunshine447 Group Title
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    @Faris_Waleed

    • 2 years ago
  17. Sunshine447 Group Title
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    @AccessDenied

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

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

    • 2 years ago
  20. Sunshine447 Group Title
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    @CliffSedge

    • 2 years ago
  21. CliffSedge Group Title
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    What is the radius of the large pipe?

    • 2 years ago
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