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A cissoid with formula $y^2(2a - x) = x^3$ where $a>0$

How do I show the the volume of the cissoid rotated about the asymptote is:

$$V = 2\pi \int_0^{2a} (3a - x)(2ax - x^2)^{1/2} dx$$

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    Look at the Wikipedia page on [solids of revolution](http://en.wikipedia.org/wiki/Solid_of_revolution). There you should find a point at which you can start.2011-06-22
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    I hope this question isn't for the SAC???2011-06-28
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    @Victor: I converted what you wrote as an answer into a comment. Soon you will have earned sufficient reputation to be able to make comments yourself.2011-06-28

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