## 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?:/

1. Rae<3Rae

here is the picture

2. slaaibak

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

3. Rae<3Rae

no

4. slaaibak

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

5. dakotajason27

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

1 sec

7. slaaibak

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

8. Rae<3Rae

would the radius be 12 or 6?

9. slaaibak

6

10. dakotajason27

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

11. Rae<3Rae

i got 414.48 that answwer isnt up there

12. dakotajason27

Rae try my method plz i got the right answer!

13. Rae<3Rae

ok 1 sec

14. 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

15. slaaibak

*surface area

16. Rae<3Rae

what is D?

17. dakotajason27

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

18. Rae<3Rae

i mean what is the diameter

19. 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.

20. Rae<3Rae

ok i got 113.04 can i just get hte answer

21. dakotajason27

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

22. Rae<3Rae

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

23. Rae<3Rae

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

24. dakotajason27

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

25. Rae<3Rae

can i just get the answer now i got 1205.76

26. dakotajason27

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

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

28. Rae<3Rae

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

29. Rae<3Rae

thanks!

30. Rae<3Rae

slaaibak what are you trying to write?