$10\mathrm{.}17.$ Find the A$,$ B and D matrices for the following composite: $50\%$ volume Fraction Boron$-$Epoxy Composite

$E_{11}=30\mathrm{.}0{10}^6$

$E_{22}=3\mathrm{.}0{10}^6$

$G_{12}=1\mathrm{.}0{10}^6$

$v_{12}=0\mathrm{.}22$

Stacking Sequence $($each lamina is ${0\mathrm{.}0125}^{\text{'}\text{'}}$ thick$)$

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