(SI units) A U-groove weld is used to butt weld two pieces of 7.0 -mm-thick austenitic stainless steel of the groove is 4.0mm; however, during welding, the penetration of the weld causes an additional 1.5mm of metal to be melted. Thus, the final cross-sectional area of the weld can be approximated by a semicircle with radius =5.5mm. The length of the weld =250mm. The melting factor of the setup =0.65, and the heat trapsfer factor =0.85. Assuming the resulting top surface of the weld bead is flush with the top surface of the plates, determine the amount of heat (J) required to melt the volume of metal in this weld (filler metal plus base metal)? 110,357J 111,3571 112.357J 110,400J