solution
Step 1
Write the length of the side of the cube:
L = 18km. H = 18km and B = 19km
Step 2
Apply the volume of a cuboid formula
[tex]\begin{gathered} Volume\text{ of a cuboid = L}\times B\times H \\ \\ Volume\text{ = L}\times H\times B \\ \\ Volume\text{ = 18 }\times\text{ 18 }\times\text{ 19} \\ \\ Volume\text{ = 6156 km}^3 \end{gathered}[/tex]
Final answer
C. 6156
