Q2.The vertical angle reading measured from station A to station B,C,D are as shown in the Following Table: -Instrument station station Face right Face left 85.° 14 10" 93 ° 27' 14" B 274.9.45' 10" 266 ° 32' 36" 262 ° 41' A C 97 ° 18'50" 18" If the height of the theodolite instrument on the point A=1.5m and its elevation =30m..Calculate the elevations of points B, C, &D if the horizontal distance between points B,C,D, 50m ,100m 150m.respectively.

Q:The following consecutive readings were taken with a leveling instrument at intervals of 25 m. (3.375, 2.730, 1.615, 4.450, 3.835, 3.070, 2.835, 1.985, 1.435, 2.630, 3.255, and 4.630 m). The instrument was shifted after the fourth and eighth readings. The last reading was taken on a B.M. of RL 111.200 m. Find the RLs of all the points (Height of instrument method).