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Question 986267: The higher you are, the further. you can see to the horizon (assuming there is nothing blocking your line of sight). The formula for this is D= (25 sqrt h)/7
where D is the distance you can see (in kilometers) , and h is how high your eyes are above sea level (in metres)
i) How far can you see if you are on a hillside looking out to see and your eyes are 36 metres above sea level? Give your answer o 2 d.p
ii) Rearrange the formula D=(25 sqrt h)/7 to make h the subject.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The higher you are, the further. you can see to the horizon (assuming there is nothing blocking your line of sight). The formula for this is D= (25 sqrt h)/7
where D is the distance you can see (in kilometers) , and h is how high your eyes are above sea level (in metres)
i) How far can you see if you are on a hillside looking out to see and your eyes are 36 metres above sea level? Give your answer o 2 d.p
D = (25sqrt(h)/7
D = 25sqrt(36)/7
D = 25*6/7
D = 21.43 km
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ii) Rearrange the formula D=(25 sqrt h)/7 to make h the subject.
7D/25 = sqrt(h)
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h = sqrt(7*D)/5
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Cheers,
Stan H.
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