Volume of Gravity Bin with Length at top(L) = 6, Width at top(W) = 6, Top Height(H1) = 6, Bottom Length(C) = 0 and Bottom Height(H2) = 6 is 288
Volume = C × H2 × W/2 + (L - C) × W × H2/3 + W × L × H1
Where H1 = Top Height, W = Width at top, L = Length at top, H2 = Bottom Height, C = Bottom Length