A series of perpendicular offsets were taken from the transit line to a curved boundary line. These offsets were taken 10 m apart and were recorded as 3.2 m., 4.8 m., 6.2 m., and 7.1 m. Determine the area included between the transit line and the curved boundary using trapezoidal rule.

The following perpendicular offsets were taken at 10 m intervals from a survey line to an irregular boundary line. The area in square metre enclosed between the survey line, irregular line, first and last offsets by Simpson's rule is : Perpendicular offsets, 5 m, 2 m, 4.5 m, 6 m, 1 m, 2 m, 4 m, 2.5 m, 4 m

SITUATION 3. a) The base and altitude of a triangle lot were measured to have certain probable errors of 314.60 0.16 and 92.60 = 0.14, compute the probable error of the resulting computation. (3- b) The following sides of a rectangle and its probable errors are 120.40 0.04 and 360.50 ± 0.08 respectively. Compute the probable errors of the sum of the sides (perimeter) of rectangle. (3r c) The probable error of the mean of 6 observation is 0.043 and the most probable value of the measurement is 860 m compute the relative precision. C