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anonymous

  • one year ago

I NEED HELP ASAP PLEASE AND THANK YOU! The diameter of the base of a right cone is 8 cm. If the total surface area of the cone is 164(pi) cm2, what is the length of the slant height? (Will Medal and Fan for best answer)

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  1. anonymous
    • one year ago
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    @Ashleyisakitty If you could help me i would very mich appreciate it! :P

  2. anonymous
    • one year ago
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    @Nnesha could you help me?

  3. anonymous
    • one year ago
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    hello

  4. anonymous
    • one year ago
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    you there?

  5. anonymous
    • one year ago
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    yes

  6. anonymous
    • one year ago
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    \[A=\pi r (r+\sqrt{h^2+r^2})\]

  7. anonymous
    • one year ago
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    That is the formula for the surface area

  8. anonymous
    • one year ago
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    Hold on this is a multiple choice question so these are the answers i just need to narrow it down 12.5 cm 19.5 cm 37 cm 45 cm

  9. anonymous
    • one year ago
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    |dw:1434408597776:dw|

  10. anonymous
    • one year ago
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    okay the formula will help me hold on

  11. anonymous
    • one year ago
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    i kept getting 9.05 for the slant height

  12. anonymous
    • one year ago
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    we need to find the height using the formula and then use pythagorean to find the slant length

  13. anonymous
    • one year ago
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    ok, give me a sec

  14. anonymous
    • one year ago
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    i got 9.05 as well

  15. anonymous
    • one year ago
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    yeah but it isnt one of the answers. You have to square root 17 so i was wondering if i should just put 17

  16. anonymous
    • one year ago
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    huh, that's strange

  17. anonymous
    • one year ago
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    *19.5

  18. anonymous
    • one year ago
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    its close to 17

  19. anonymous
    • one year ago
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    ohhhhhh 164pi

  20. anonymous
    • one year ago
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    i didn't see that pi, let me try again

  21. anonymous
    • one year ago
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    i think its 37

  22. anonymous
    • one year ago
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    that's what i got

  23. anonymous
    • one year ago
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    looks good to me

  24. anonymous
    • one year ago
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    Me too

  25. anonymous
    • one year ago
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    Ill go with that thank you very much

  26. anonymous
    • one year ago
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    no problem

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