## Apellot7 3 years ago A firecracker has dimensions as shown. Height is 14 cm, radius is 1 cm and slant height of the cone is 2 cm. Paper covers the entire surface area including the cone, the lateral area and the bottom circle but does not include the tail. What is the best approximate area of paper needed to wrap the firecracker? (Use for . Round your answer to the nearest whole number.)

1. Apellot7

2. nickymarden

you have 2 different shapes. a cilinder and a cone. to calculate the whole area you will need to calculate the total area of the cilinder and the total area of the cone. \[Acone= pi * r^2\] \[Acilinder=2*π*r*h + 2π*r2 \]

3. Apellot7

\[pi=3.14\]

4. nickymarden

yes.

5. Apellot7

can you set the problum up with me?

6. nickymarden

yes, sure.

7. Apellot7

OK

8. nickymarden

\[Acone: 3,14*1^2\]

9. Apellot7

= 3.14

10. nickymarden

\[Acilinder=2*3,14*1*14+2*3,14*1^2\]

11. nickymarden

then: Acone+Acilinder

12. nickymarden

13. Apellot7

14. Apellot7

=287.4888

15. nickymarden

:)

16. Apellot7

thats not the answrs i have. thought

17. Apellot7

\[100cm2 power 97cm to 2 power 91cm2 power 104cm2

18. nickymarden

well, those are the formulas :x

19. Apellot7

didd i do the math wrong? can yuu coculated them 2

20. nickymarden

21. Apellot7

22. Apellot7

see

23. nickymarden

yees, i just told you the answer lol

24. Apellot7

no...! lol jk

25. nickymarden

haha