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?:/

- anonymous

- katieb

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- anonymous

here is the picture

##### 1 Attachment

- slaaibak

Do you know the formula for the surface area of a cylinder pyramid thing?

- anonymous

no

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## More answers

- slaaibak

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

- anonymous

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

- anonymous

1 sec

- slaaibak

(height is the slant height in my formula)
Dakota I think you are confused. That's not the formula.

- anonymous

would the radius be 12 or 6?

- slaaibak

6

- anonymous

well mine gets one of the answers offered yours doesnt try working it out slaaibak

- anonymous

i got 414.48 that answwer isnt up there

- anonymous

Rae try my method plz i got the right answer!

- anonymous

ok 1 sec

- slaaibak

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

- slaaibak

*surface area

- anonymous

what is D?

- anonymous

Therefore i am not confused slaaibak ;) and d is diameter

- anonymous

i mean what is the diameter

- slaaibak

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.

- anonymous

ok i got 113.04 can i just get hte answer

- anonymous

it should be 1/2[ pi x 12 x 16} pi = 3.14

- anonymous

i have tried to figure this out 50 times and i cannot get the right answer

- anonymous

ok how do i get the answer from here: 1/2 (226.08)

- anonymous

just multiply everything out and leave the pi until the very end then multiply by pi

- anonymous

can i just get the answer now i got 1205.76

- anonymous

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

- anonymous

u need help figure it out i just worked it out for you! geez its not rocket science just multiply!!!!!!!!!!

- anonymous

and i have the answer i got it before your last thing with the equations

- anonymous

thanks!

- anonymous

slaaibak what are you trying to write?

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