Q. 130 A continuous and aligned glass-fiber reinforced composite consists of $40 \mathrm{vol} \%$ of glass-fiber having a modulus of elasticity of $69 \mathrm{GPa}$ and $60 \mathrm{vol} \%$ of a polyester resin, which when hardened, displays a modulus of $3.4 \mathrm{GPa}$. The modulus of elasticity of this composite in the longitudinal direction is $\mathrm{GPa}$. (Rounded off to two decimal places)
