SOLUTION: A student who is 4 feet tall estimates the height of a lamppost. The student stands 30 feet from the bast of the lamppost and measures her shadow from the light as 6 feet long. A

Question 322186: A student who is 4 feet tall estimates the height of a lamppost. The student stands 30 feet from the bast of the lamppost and measures her shadow from the light as 6 feet long. Approximately how high is the lamppost?
Answer by galactus(183) (Show Source): You can put this solution on YOUR website!
This is a proportion problem using similar triangles.
Let the height of the lamp be y.
Her height is 4. Since she is 30 feet from the lamp and her shadow is 6 feet long, then the tip of her shadow is 36 feet from the post.
. Solve for y.

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