The fibers are produced by chemical vapor deposition of fibers onto fine tungsten wires of dW=10µm. The final wire diameter is dB=75µm. The boron coated wires are then added to an aluminum matrix with VW+B=0.35 fiber volume fraction. The Moduli of the materials are given EW=410GPa ,EB=379GPa ,EAl=69GPa .Give a numerical value for the elastic modulus of the composite, for loading along the length of the fibers.