A snowboard core to be manufactured by laminating sheets of: I) 45% Glass fiber reinforced epoxy prepreg and II) 20% Aramid fiber reinforced nylon prepreg in an alternating sequence, The total allowable thickness of the core should not exceed more than 12.70 mm. Assumptions: - Thickness of both layers to be equal. - The number of sheets of each material be equal. - Composite structure has no void. A) Drive an expression for the interfacial area of these laminates as a function of thickness. B) What should be the individual thickness of these laminates to achieve total interfacial area per volume of 12 mm?