SOLUTION: A man is walking away from a lamppost with a light source 9 meters above the ground. The man is 1.95 meters tall. How long is the man's shadow when he is 11 meters from the lamppos
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Question 338674: A man is walking away from a lamppost with a light source 9 meters above the ground. The man is 1.95 meters tall. How long is the man's shadow when he is 11 meters from the lamppost?
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
You need to make a picture involving similar right triangles....
Let x = length of man's shadow
Then, the problem is a proportion
[1.95 / x] = [9 / (11 + x)]
solve for x
You can do it. Go for it.
QED
x ≈ 3.043 m
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