Which method is the most practical for this volume problem?

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Find the volume of the solid generated by revolving the region bounded by

$$ y = \frac{3}{\sqrt{x^2 + 9}}, x = 4, y-axis $$

Rotated about the y-axis.

After drawing the graph, I wanted to simply take the integral in regards to y and do the disk method but then I looked at $\frac{3}{\sqrt{x^2 + 9}}$ and decided that there might be an easier way than that.

Am I able to simply use the shell method here instead?

Such that:

$$ 2 \pi \int_0^4 4 * \frac{3}{\sqrt{x^2 + 9}}$$

Pulling out the numbers up front:

$$ 24 \pi \int_0^4 \frac{1}{\sqrt{x^2 + 9}} $$

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The shell method should be

$$ V = 2\pi \int_0^4 xf(x) \ \mathrm{d}x $$