Two survey stations A and B on opposite sides of a river 765.048 mapart, and reciprocal levels have been taken between them with thefollowing results: Considering the effects of curvature and...

Two survey stations A and B on opposite sides of a river 765.048 m
apart, and reciprocal levels have been taken between them with the
following results:

Considering the effects of curvature and refraction,
a. Compute the difference in level between A and B.
b. If the elevation of station A is 2.445 m above sea level, compute the elevation of station B.

Extracted text: INSTRUMENT HEIGHT OF INSTRUMENT STAFF AT STAFF READING AT A 1.4722 m B 1.8349 m B 1.4966 m A 1.2131 m