Hi,

Hope I can explain this well. I have a function that gives me the deflection of a circular/disk membrane as a function of the radius. From this I can get the cross sectional area/profile of the disks displacement in terms of the radius. I would now like to revolve this area to create a volume.

My problem is that when ever I look this up on the internet I find equations for the volume if I revolve the area aournd the x-axis whilst I want to revolve it around the y-axis.

My inital attempt was to invert the function tbut this has proven impossible

My questions are:

1) Would the volume be same reguardless of which axis I choose to revolve around?

2) Is there an better way of doing this?