Find the volume of the solid generated by revolving the region bounded by the graphs of the equation about the line y = 4.
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.
My Answer: 9pi.
Textbook answer: 18pi.
Where did 18 come from?