Find volume of the solid generated by rotating the plane region bounded by x2−4x+2=y and y=2 about the line y=2. I'm having troubles finding the radius so i can do the question

Question

Find volume of the solid generated by rotating the plane region bounded by x2−4x+2=y and y=2 about the line y=2.   I'm having troubles finding the radius so i can do the question

anonymous · Answer

that' x^2 - 4x + 2 = y

anonymous · Answer

The radius is the whole equation integrated

anonymous · Answer

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look at the radius with respect to the representative rectangle.  axis or revolution is y = 2.
The height of the function is given by y = x^2 - 4x + 2.
So, what is R = ?