Answer:
25. 51.2 cubic km
Step-by-step explanation:
The volume of a pyramid is the area of the base times height times 1/3. So to find the volume, calculate the area of the base first.
25. The base is a triangle so the area is A = 0.5bh.
A = 0.5*12*4 = 24
V = 24 * 6.4*1/3
V = 51.2
