## crystal1 3 years ago Two similar cones are shown in the image below. What is the approximate surface area of the larger cone? 1544.4 square yards 978.5 square yards 2,162.3 square yards 1,103.1 square yards

1. crystal1

2. across

This is a proportion problem; you need to know how to set up a proportion to estimate the radius of the larger cone. You also need to know how to compute the surface area of a cone. Where are you stuck?

3. crystal1

everything

4. crystal1

@bngaure @bobbylynn @EsmeraldaT @eliassaab @Emily_Martin_14 @RioAnne

5. across

I'll give you a hint: the surface area of a cone is$SA=\pi r^2+\pi rl,$where|dw:1346792025872:dw|

6. across

That's about half of the problem right there, and what do you mean with "everything"?

7. Emily_Martin_14

why did you tag me in this?

8. crystal1

cause i need helpppppppppppppppppppppppppppppppppppppppppp

9. Emily_Martin_14

oh k well im really sorry i dont know this :( do you have a formula for finding the surface of a cone?

10. across

Sometimes I really wonder if people can see my posts, lol.

11. Emily_Martin_14

lol

12. crystal1

how you do that!!!!!!

13. Emily_Martin_14

@crystal1 the other girl across is helping you find the answer

14. Emily_Martin_14

@crystal1 umm what grade r u in?

15. crystal1

10

16. Emily_Martin_14

oh thats why i dont understand it in only in 9th

17. crystal1

lol

18. across

I don't think @crystal1 wants my help. <:) Oh well, good luck!

19. crystal1

yes i do

20. Emily_Martin_14

well take her help and work it out