What graphs? What equations?

I have no idea where you got because I have no idea what region you are talking about!I set y = y to find the boundaries.

I found the boundaries to x = o

and x = 3.

V = pi INT from x = 0 to x = 3 of the function (x)^2 dx.

It is impossible to answer this without knowing what the problemMy Answer: 9pi.

Textbook answer: 18pi.

Where did 18 come from?isor what you did.