The slope distances shown were measured with an EDM while the differences in elevation between the ends of each line were determined by leveling. What are the horizontal distances?

Slope Distance (ft)      Elevation difference (ft)

A.    734.78             -26.54                                      (Ans: 734.30 ft)

B.     1382.81           -21.68                                      (Ans: 1382.64 ft)

C.     972.11             +15.32                                     (Ans: 971.99 ft)