Answer:
<em>The Volume is 5.018 cubic units</em>
Explanation:
<u>Volume Of A Solid Of Revolution</u>
Let f(x) be a continuous function defined in an interval [a,b], if we take the area enclosed by f(x) between x=a, x=b and revolve it around the x-axis, we get a solid whose volume can be computed as

It's called the disk method. There are other available methods to compute the volume.
We have

And the boundaries defined as x=1, y=0 and revolved around the x-axis. The left endpoint of the integral is easily identified as x=0, because it defines the beginning of the region to revolve. So we need to compute

We need to first determine the antiderivative

Let's integrate by parts using the formula

We pick 
Then 
Applying by parts:


Now we solve

Making 

Applying by parts again:


The last integral is directly computed

Replacing every integral computed above

Simplifying

Now we compute the definite integral as the volume
![V=\pi \left[\dfrac{\left(2(1)^2-2(1)+1\right)\mathrm{e}^{2(1)}-\left(2(0)^2-2(0)+1\right)\mathrm{e}^{2(0)}}{4}\right]](https://tex.z-dn.net/?f=V%3D%5Cpi%20%5Cleft%5B%5Cdfrac%7B%5Cleft%282%281%29%5E2-2%281%29%2B1%5Cright%29%5Cmathrm%7Be%7D%5E%7B2%281%29%7D-%5Cleft%282%280%29%5E2-2%280%29%2B1%5Cright%29%5Cmathrm%7Be%7D%5E%7B2%280%29%7D%7D%7B4%7D%5Cright%5D)
Finally

The Volume is 5.018 cubic units
Galaxies are much further apart than stars. This is the reason why they are less likely to collide and the likelihood of galactic collision is much smaller than the likelihood of stellar collision. Example for galaxy collision is the collision of the Milky Way galaxy with Andromeda. It is estimated that the collision will be <span>in about 4.5 billion years. </span>
I would say the answer is B
Hope it helps!
<span>These Russian nesting dolls are a good analogy for the strongest magnet in the world, because the magnitis were put inside each other. The magnets would be fitted together. Because they are closer together, the coils of magnet would be stronger. They would be able to magnetize better.</span>