Should the Volume of a Solid of Revolution always be the same when rotated around the x-axis than around y-axis?

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So for example, take:

$y = 2x$ on the interval $[0,1]$ around the $x$-axis.

The volume should be $4π/3 u^3$.

Now rotating $y = 2x$ on the interval $[0,1]$ around the $y$-axis:

1) Rewrite the function: $x = y/2$.

2) Recalculate limits: $[0,2]$.

I get: $4π/3 u^3$ -again!

Is this true with all functions and axes?

I ask because, I'm studying for a test and can't seem to find examples of the same function being rotated around different axes. Often times I get different results.

I appreciate your time, I believe many others are wondering the same.

Thanks!