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anonymous

  • one year ago

will fan and medal!! A cylindrical piece of iron pipe is shown below. The wall of the pipe is 1.25 inch thick: The figure shows a cylinder of height 16 inches and diameter 6 inches. What is the approximate inside volume of the pipe? 88 cubic inches 49 cubic inches 142 cubic inches 154 cubic inches

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  1. anonymous
    • one year ago
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    Help

  2. anonymous
    • one year ago
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    @welshfella @Hero @acxbox22 @LegendarySadist @prowrestler @Zale101 @xavierbo2 @campbell_st @vera_ewing @bubbleslove1234

  3. anonymous
    • one year ago
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    Help

  4. anonymous
    • one year ago
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    hello?

  5. campbell_st
    • one year ago
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    so the pipe has an outer diameter of 6 inches so radius 3 inches an inner diameter of 6 inches - 2 x 1.25 so the inner diameter is 3.5 inches or radius 1.75 inches so find the area of the inner circle and then multiply by the height of 16 inches |dw:1439237745793:dw|

  6. anonymous
    • one year ago
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    How do i find the area of the inner circle?

  7. anonymous
    • one year ago
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    Im retarded im sorry

  8. MattDuhHelper
    • one year ago
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    multiply. cause its area

  9. anonymous
    • one year ago
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    so what do i multiply

  10. campbell_st
    • one year ago
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    well the area of a circle is \[A = \pi r^2\] and you have your radius

  11. campbell_st
    • one year ago
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    so substitute and calculate the area... then multiply by the height

  12. anonymous
    • one year ago
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    ok sec

  13. anonymous
    • one year ago
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    so A=3.14x1.75x 16?

  14. campbell_st
    • one year ago
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    well you need to square the inner radius...

  15. anonymous
    • one year ago
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    so the inner radius is 9?

  16. anonymous
    • one year ago
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    Im so incompetent

  17. campbell_st
    • one year ago
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    the area of the inner circle is \[A = \pi \times 1.75^2\] calculate the area then multiply by the height

  18. anonymous
    • one year ago
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    I got 9.616 @campbell_st

  19. campbell_st
    • one year ago
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    that's ok for the area, now multiply by the height

  20. anonymous
    • one year ago
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    153.86?

  21. anonymous
    • one year ago
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    @campbell_st

  22. anonymous
    • one year ago
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    lol its d thank you so much @campbell_st

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spraguer (Moderator)
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