This is what i have so far
We can find the exact volume of any shape using:
V= $$int[a,b] A(x) dx$$
Where,A(x)is the cross-sectional area at height x
and [a,b] is the height interval
We know that the horizontal cross-sections are hexagonal
$$∴A=(3√3)/2 a^2$$
Where a,is the length of a side...