(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The curve x=y^(2) and the line x=4 is rotated about the x axis.

2. Relevant equations

pi* integral from a to b of Radius^(2)

3. The attempt at a solution

pi* integral from 0 to 4 of (square root of x)^(2) dx.

My teacher has this answer as 8pi but I think that that is wrong. Shouldn't it be 16 pi because you have to account for symmetry?

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# Homework Help: Disk Method

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