4. An instrument is set over point “A" with a 5.45 ft. H.I. A vertical angle of -9°35'17" and a slope distance of 253.86 ft. were taken to a rod

5.17 ft. above point "B". The elevation of point “B" is 272.10 ft.What is the elevation of point “A"? (Draw a sketch to support your answer).

Fig: 1