v = 1/3 * l * w * h
v / 2 = 1/3 * kl * kw * kh ... v/2 = k^3 v ... k = (1/2)^(1/3)
top part height = h * [(1/2)^(1/3)]
bottom part height = h {1 - [(1/2)^(1/3)]}
a wooden pyramid is to be cut into.parts of equal weights by a plane parallel to its base. find the ratio of the heights of the two parts
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