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1. |
A sailor, standing on the deck of a ship, just sees the light beam from a lighthouse on the shore. If the height of the sailor's eye and of the light beam at the lighthouse, above the sea level, are 9 m and 25 m respectively, what is the distance between the sailor and the lighthouse ? |
A. | 29.8 km |
B. | 31.1 km |
C. | 31.9 km |
D. | 33.2 km |
Answer» C. 31.9 km | |