Answer:
![V=8,448u^3](https://tex.z-dn.net/?f=V%3D8%2C448u%5E3)
Step-by-step explanation:
The volume of a prism is given by:
![V=A_{b}*h](https://tex.z-dn.net/?f=V%3DA_%7Bb%7D%2Ah)
where
is the area of the base, and
is the height of thr prism.
We know that the height is:
u
and the bases of this prism are hexagons.
Thus the area of the base is the area of a regular hexagon:
![A_{b}=\frac{n*l*a}{2}](https://tex.z-dn.net/?f=A_%7Bb%7D%3D%5Cfrac%7Bn%2Al%2Aa%7D%7B2%7D)
where
is the number of sides: for an hexagon: ![n=6](https://tex.z-dn.net/?f=n%3D6)
is the length of each side:
u,
and
is the apothem: ![a=16u](https://tex.z-dn.net/?f=a%3D16u)
we substitute all of this to find the area of the base:
![A_{b}=\frac{6*8u*16u}{2}\\ \\A_{b}=\frac{768u^2}{2}\\ \\A_{b}=384u^2](https://tex.z-dn.net/?f=A_%7Bb%7D%3D%5Cfrac%7B6%2A8u%2A16u%7D%7B2%7D%5C%5C%20%5C%5CA_%7Bb%7D%3D%5Cfrac%7B768u%5E2%7D%7B2%7D%5C%5C%20%5C%5CA_%7Bb%7D%3D384u%5E2)
and finally we use the formula for the volume:
![V=A_{b}*h](https://tex.z-dn.net/?f=V%3DA_%7Bb%7D%2Ah)
we get the following:
![V=384u^2*22u\\V=8,448u^3](https://tex.z-dn.net/?f=V%3D384u%5E2%2A22u%5C%5CV%3D8%2C448u%5E3)
which is the third option