Aline designated as q to z is used to calibrate the reflector constant for a total station. point x is located on-line between q and z. the total station is set up over point q and distances are measured to x and z. the reflector constant in the total station is set to zero. the distance qx is 254.111 m and qz is 676.276 m. the total station is then set up at x and the distance xz is measured at 422.215 m. this same equipment measures another line at 825.675 m. what is the correct length to the nearest mm.