Question

Find the volume of the solid formed by revolving the region bounded by the graphs of y = x^2, x = 3, and y = 4 about the y-axis.

Answer 1

@rational

Answer 2

well, you can do this

x=sqrt(y)

limits y=0 to y=4

and do disk in terms of y.

Answer 3

So, you have x=3 the bigger radius, and x=sqrt(y) the smaller radius