anonymous
  • anonymous
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)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@Ashleyisakitty If you could help me i would very mich appreciate it! :P
anonymous
  • anonymous
@Nnesha could you help me?
anonymous
  • anonymous
hello

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anonymous
  • anonymous
you there?
anonymous
  • anonymous
yes
anonymous
  • anonymous
\[A=\pi r (r+\sqrt{h^2+r^2})\]
anonymous
  • anonymous
That is the formula for the surface area
anonymous
  • anonymous
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
anonymous
  • anonymous
|dw:1434408597776:dw|
anonymous
  • anonymous
okay the formula will help me hold on
anonymous
  • anonymous
i kept getting 9.05 for the slant height
anonymous
  • anonymous
we need to find the height using the formula and then use pythagorean to find the slant length
anonymous
  • anonymous
ok, give me a sec
anonymous
  • anonymous
i got 9.05 as well
anonymous
  • anonymous
yeah but it isnt one of the answers. You have to square root 17 so i was wondering if i should just put 17
anonymous
  • anonymous
huh, that's strange
anonymous
  • anonymous
*19.5
anonymous
  • anonymous
its close to 17
anonymous
  • anonymous
ohhhhhh 164pi
anonymous
  • anonymous
i didn't see that pi, let me try again
anonymous
  • anonymous
i think its 37
anonymous
  • anonymous
that's what i got
anonymous
  • anonymous
looks good to me
anonymous
  • anonymous
Me too
anonymous
  • anonymous
Ill go with that thank you very much
anonymous
  • anonymous
no problem

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