Volumes question (1 Viewer)

[wilsondw]

Determine the volume of the solid obtained by rotating the region bounded by y=2((x-1)^1/2) and y=x-1 about the line x=-1


Dont show me the solution...wondering what people got as their answer

 

[seanieg89]

96pi/5, may be wrong though...do not have paper at hand.

 

[wilsondw]

no other responses?

 

[Nooblet94]

96pi/5, may be wrong though...do not have paper at hand.

So... you did that in your head? That's quite impressive. Anyway, I got that too.

 

[Carrotsticks]

http://en.wikipedia.org/wiki/Pappus's_centroid_theorem

 

[seanieg89]

Nooblet: Thanks, I usually make silly errors when I try things like that.

Carrot: I remember getting a good 4U student to prove that formula for regions of a certain type, it can be deduced from syllabus techniques. Will post a question on it shortly.

 

[wilsondw]

THX guys.....I was wondering what I did wrong....found out in 15 minutes