Sea

How far can you see from the top of a ship's mast that is 9 metres above sea level? (The Earth's radius is 6370 km km.)

Final Answer:

x =  10.7 km

Step-by-step explanation:

R=6370 km h=9 m km=9:1000  km=0.009 km  x=2 R h+h2=2 6370 0.009+0.0092=10.7 km



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