volume of a solid generated around something

[ellabrooks415]

c)find the area volume of the solid generated by revolving the region between the yaxis and the curve x=2/y, for the yvalues from 1 to 4 about the yaxis
d)find the area volume of the solid generated by revolving the region bounded by y=secX, y=sqrt2, x=-pi/4 and x=pi/4
e)find the area volume of the solid generated by revolving the region bounded by x=2y-y^2 about the xaxis

 

[MarkFL]

Two things are probably preventing you from getting help:

a) You are posting multiple questions in one topic

b) you have shown no thoughts/attempt, etc.