The values of the exterior angles in the figure shown, measured by a one second theodolite, are: Angle ABC BCD CDE DEF EFA FAB Mean observed Value 272 03' 10" 272°05' 51" 104° 50' 31" 261° 11'06" 266° 10' 15" 263° 38' 25" (a) Determine the sum of the measured angles. (b)Determine the angular error of the traverse. (c) Adjust the angles of the traverse to eliminate the error. (d) Given that the whole circle bearing of line AB is 43°40'45", calculate the bearings of all other lines of the traverse. The sum of exterior angles = 62n+4) * 90

Steam in a heating system flows through tubes whose outer radius is 2.5 cm and whose walls are maintained at a temperature of 180 °c . circular aluminum alloy 2024-t6 fins ( k= 186 wm. k) of outer radius 3 cm and constant thickness 1 mm are attached to the tube. the space between the fins is 3 mm and thus there are 250 fins per meter of tube length. heat is transferred to the surrounding air at too-25 °c, with a heat transfer coefficient of 40 w/m2. k. manufacturer a claims that this system is rated at 3.5 kw per meter of tube length. if the fins are an integral part of the steam tube, find the heat transfer rate in kw for a 1-m length of tube. is manufacturer a's claim valid? compare the heat transfer rate from 1 meter of tube length if there are no fins.