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anonymous

  • one year ago

Can someone help me?

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  1. anonymous
    • one year ago
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  2. is3535
    • one year ago
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    i can t see the link a you copy and past and post

  3. anonymous
    • one year ago
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    Ok, one sec.

  4. anonymous
    • one year ago
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    A cone has a diameter of 16 in. and a slant height of 17 in. What is the approximate volume of the cone? Use 3.14 to approximate the value of straight pi. Round your answer to the nearest tenth, if necessary. (Hint: V =1/3 pi r squared h A. 1004.8 in3 B. 1138.8 in3 C. 1259.3 in3 D. 4019.2 in3

  5. is3535
    • one year ago
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    i think it D

  6. anonymous
    • one year ago
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    @cvliboi Can you help me on this?

  7. hartnn
    • one year ago
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    diameter = 16 so what will be radius = r = .. ?

  8. anonymous
    • one year ago
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    Wouldn't I just have to divide 16 by two? Wouldn't the radius be 8?

  9. hartnn
    • one year ago
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    yesss r= 8 h =17 you have the formula, just plug the values in!

  10. hartnn
    • one year ago
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    just a sec, its slant height l = 17 we need to find the value of 'h' using pythagoras theorem first :)

  11. hartnn
    • one year ago
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    |dw:1432752080994:dw| do you know pythagoras theorem ?

  12. anonymous
    • one year ago
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    Yeah

  13. hartnn
    • one year ago
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    so can you tell me the value of h ?

  14. anonymous
    • one year ago
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    I'm confused. If we're talking about the Pythagoras Theorem, shouldn't I so 17*17 and 8*8? If so, then 17*17=289 and 8*8=64 and then added together it would be 353...

  15. hartnn
    • one year ago
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    the hypotenuse is 17 :) so 17^2 = 8^2 + h^2 so to get h^2, you'll infact subtract those 2 values, not add them

  16. anonymous
    • one year ago
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    Oh, so then it would be 289-64=225?

  17. hartnn
    • one year ago
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    thats right :) h^2 = 225 so h= .. ?

  18. anonymous
    • one year ago
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    50625

  19. anonymous
    • one year ago
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    Wait...I don't think I did that right..

  20. hartnn
    • one year ago
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    h = 225 h = sqrt 225 = ... ?

  21. anonymous
    • one year ago
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    15

  22. hartnn
    • one year ago
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    correct! h = 15 r = 8 just plug these in the formula given :)

  23. anonymous
    • one year ago
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    Ohh, I get it now. Thank you so much for your help :)

  24. hartnn
    • one year ago
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    you're welcome ^_^

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