Question: I think that for this question I should use the formula V= I n t e r v a l 2pi r f(x) dx but

I think that for this question I should use the formula V= Interval 2pi r f(x) dx but I'm not sure how to find the radius.

The region bounded by f(x) = - 2x- + 6x + 36, x - 0, and y = 0 is rotated about the y-axis. Find the volume of the solid of revolution. Find the exact value; write answer without decimals

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