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Rae<3Rae

  • 2 years ago

Mel is making a paper tepee, as shown below. What is the area of the paper required to make the lateral surface of the tepee? 37.7 cm2 69.1 cm2 603.3 cm2 301.7 cm2 it would help alot if someone explained it to me i do not get it?:/

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  1. Rae<3Rae
    • 2 years ago
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    here is the picture

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  2. slaaibak
    • 2 years ago
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    Do you know the formula for the surface area of a cylinder pyramid thing?

  3. Rae<3Rae
    • 2 years ago
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    no

  4. slaaibak
    • 2 years ago
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    oh mybad, you call it a cone. The formula is \[Surface Area = \pi \times radius^2 + \pi \times radius * height\]

  5. dakotajason27
    • 2 years ago
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    Rae well the formula for surface area of a cone is 1/2 [pi x D x slant height] so plug in your numbers and solve

  6. Rae<3Rae
    • 2 years ago
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    1 sec

  7. slaaibak
    • 2 years ago
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    (height is the slant height in my formula) Dakota I think you are confused. That's not the formula.

  8. Rae<3Rae
    • 2 years ago
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    would the radius be 12 or 6?

  9. slaaibak
    • 2 years ago
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    6

  10. dakotajason27
    • 2 years ago
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    well mine gets one of the answers offered yours doesnt try working it out slaaibak

  11. Rae<3Rae
    • 2 years ago
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    i got 414.48 that answwer isnt up there

  12. dakotajason27
    • 2 years ago
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    Rae try my method plz i got the right answer!

  13. Rae<3Rae
    • 2 years ago
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    ok 1 sec

  14. slaaibak
    • 2 years ago
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    They don't include the bottom surface it seems. Then just don't add the bottom surface. It reduces to Area = pi * radius * slant height

  15. slaaibak
    • 2 years ago
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    *surface area

  16. Rae<3Rae
    • 2 years ago
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    what is D?

  17. dakotajason27
    • 2 years ago
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    Therefore i am not confused slaaibak ;) and d is diameter

  18. Rae<3Rae
    • 2 years ago
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    i mean what is the diameter

  19. slaaibak
    • 2 years ago
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    I agree, but you stated the "surface area of a cone is" which is false. But I see your point. Lateral surface. Diamater is twice the radius.

  20. Rae<3Rae
    • 2 years ago
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    ok i got 113.04 can i just get hte answer

  21. dakotajason27
    • 2 years ago
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    it should be 1/2[ pi x 12 x 16} pi = 3.14

  22. Rae<3Rae
    • 2 years ago
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    i have tried to figure this out 50 times and i cannot get the right answer

  23. Rae<3Rae
    • 2 years ago
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    ok how do i get the answer from here: 1/2 (226.08)

  24. dakotajason27
    • 2 years ago
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    just multiply everything out and leave the pi until the very end then multiply by pi

  25. Rae<3Rae
    • 2 years ago
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    can i just get the answer now i got 1205.76

  26. dakotajason27
    • 2 years ago
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    omg [12 x 16pi] =192pi then 1/2[192] = 96pi then (96)(3.14) solve! i cant just give u the answer work it out

  27. dakotajason27
    • 2 years ago
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    u need help figure it out i just worked it out for you! geez its not rocket science just multiply!!!!!!!!!!

  28. Rae<3Rae
    • 2 years ago
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    and i have the answer i got it before your last thing with the equations

  29. Rae<3Rae
    • 2 years ago
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    thanks!

  30. Rae<3Rae
    • 2 years ago
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    slaaibak what are you trying to write?

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