material science

Derive an expression for the relative density, ρ∗/ρs, of an anisotropic honeycomb with hexagonal cells:n which the vertical cell walls are of length h, the inclined cell walls are of length l, the angle between the horizontal and the inclined members is θ, and the cell wall thickness is t. The honeycomb has a depth, b, into the page. Assume that the cell walls are thin and that you can neglect the material at the vertices.

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