The figure appears to be a cylinder with the following dimensions:
Radius = 8 km
Height = 4 km
To be able to determine its volume, we will be using the following formula:
[tex]\text{ Volume = }\pi r^2h[/tex]Where,
r = radius
h = height
We get,
[tex]\text{ Volume = }\pi r^2h[/tex][tex]\text{ = (3.14)(8)}^2(4)[/tex][tex]\text{ = (3.14)(64)(4)}[/tex][tex]Volume=803.84km^3[/tex]Therefore, the volume of the cylinder is 803.84 cubic kilometers.