## brucebaner one year ago help me last question plz help me

1. brucebaner

2. brucebaner

@Ashleyisakitty

3. brucebaner

@geerky42

4. brucebaner

@10115658

5. brucebaner

plz help me @AkashdeepDeb

6. AkashdeepDeb

I think Bruce Banner would have been able to figure it out by now. Use, the slant height and the diameter of the cone to find out the height of the cone. Then, use this height in the volume formula to find the volume.

7. brucebaner

but im not good at this subject

8. brucebaner

@geerky42

9. brucebaner

@TheRaggedyDoctor

10. anonymous

it's a right triangle, find the height with pythagorean

11. anonymous

man im working on this too and havent gotten to that therom part yet

12. anonymous

|dw:1434410570071:dw|

13. anonymous

how do you find x

14. anonymous

x^2 + 12^2 = 15^2

15. anonymous

x=9

16. anonymous

so 9 is the height. now plug that into the formula they gave you to find the volume

17. brucebaner

$9^2+12^2=15^2$ i think?

18. anonymous

huh? you have the radius and the height, plug it into the formula they give you in the question

19. brucebaner

i dont know

20. anonymous

$V=(1/3)\pi r ^{2}h$

21. anonymous

r is 12 h is 9

22. anonymous

plug in those values to get the volume

23. brucebaner

kk

24. brucebaner

$v=1/3*12^2*9$

25. brucebaner

right?

26. anonymous

don't forget pi

27. brucebaner

ik

28. brucebaner

i get 1357.16802635

29. brucebaner

so its B?

30. anonymous

31. brucebaner

thx

32. anonymous

no problem