Aflux-cored arc-welding process is used to join two low-alloy steel plates at a 90° angle. the joint is an outside fillet weld. the plates are 1⁄4-in thick. the weld bead consists of 55% metal from the electrode and 45% from the steel plates. the heat transfer factor for fcaw = 0.9, and the melting factor = 0.65. welding current = 120 amps, and voltage = 20 volts. velocity of the welding head = 25 in/min. electrode wire diameter = 0.125 in. a core of flux (compounds that do not become part of the weld bead) runs through the center of the electrode. the diameter of the core = 0.0625 in. (a) what is the cross-sectional area of the weld bead? (b) how fast must the electrode wire be fed into the welding operation?