## hba 2 years ago A triangle is formed by the x-axis,the y-axis and the line y=ax+b.If a=-b ,then what is the volume of the cone generated by rotating this triangle around y-axis. @hartnn

1. thinker1

volume=|dw:1352379558042:dw|

2. thinker1

3. hba

4. hba

@thinker1 i cannot understand your explanation you gave above :)

5. thinker1

sorry|dw:1352381309515:dw||dw:1352381270904:dw|

6. hba

no but how y=a(x-1) ?

7. hba

I am really sorry but i am in a gap year so i am having problem :(

8. hba

@thinker1

9. thinker1

look my motive is to find the radius of the cone and its heihgt so as to get the volume.the equation is y=ax+b since a=-b we know that y=ax-a now findthe intersection points of these graph with the two axis by taking the value of yand x 0 seperately get corresponding values of x and y the corresponding value of x gives you the radius and that of y is height if confused now take the help of my drawing and thif you are still in blue tell me iam here for some minutes

10. thinker1

thanks

11. hba

$V=1/3 \pi r^3h$ y=ax+b and a=-b or b=-a so, y=ax-a y=a(x-1)

12. thinker1

yes

13. hba

Please Tell Me What I Have To Do After This Mathematically because it is hard to understand what you have written :)

14. hba

Moreover where did the h come from @thinker1

15. thinker1

his the height and y intercept of our line

16. hba

@amistre64 Please Take Care Of him :)

17. mikala1

sop do this to me idc how to frekin answer it you syco its called goolge

18. hba

@amistre63 You are so dead -_-

19. hba

@TranceNova Please Take Care Of this :)

20. mikala1

sycooooo stop some one kick him off

21. hba

Stop posting and ruining my question. I want all the unwanted posts immediately removed.

22. amistre63

disturbance

23. mikala1

thank you

24. hitten101

stop spamming

25. hba

26. Susan9419

WOULD U STAHP TAGGING ME!?!?!?!?

27. mikala1

28. hba

@amistre63 Hey Dude,Where Are You From ?

29. amistre63

@hba my mom

30. hba

@amistre64 So,Why are you trying to disturb me ?

31. thinker1

hba r u done

32. hba

No Dude Let me tell you where i got stuck :)

33. hba

|dw:1352383763847:dw|

34. hba

I cannot get what you have written @thinker1

35. amistre63

@hba because no one answers my question >.> thats why

36. hba

You never tagged me in your post,i am always there to help :)

37. hba

Why didn't you tag me ?

38. hba

Is that my fault ?

39. amistre63

=3 because its not math its stupid science

40. hba

I know science also just tag me there and i will help you right away :)

41. amistre63

ok :O

42. hba

Please stop ruining everyone's post :)

43. amistre63

ok :o

44. mikala1

amister i can help to

45. mikala1

just dont tag me any more

46. thinker1

47. hba

48. hba

I Know amber was just being a freak :( Don't know why :(

49. hba

@thinker1 ??

50. thinker1

YES IM ON

51. hba

|dw:1352384621880:dw|

52. hba

I don't get the part i circled :)

53. thinker1

THAT IS THE Y INTERCEPT |dw:1352384799109:dw|

54. hba

Please write in mathematical form also

55. hba

@thinker1

56. thinker1

AT X INTERCEPT Y CO ORDINATE IS 0NOW PUT 0 INPLACE OF X IN EQUATION TO GET X INTERCEPT SIMIL. PUT X=0 IN EQUAT. OF LINE TO GET Y INTERCEPT

57. hba

@thinker1 I am really thankful to you for helping me out :)

58. thinker1

u r welcome