To find the height of a lamppost (see figure), you stand a
Chapter 4, Problem 68(choose chapter or problem)
To find the height of a lamppost (see figure), you stand a 6-ft pole 20 ft from the lamp and measure the length a of its shadow, finding it to be 15 ft, give or take an inch. Calculate the height of the lamppost using the value a " 15, and estimate the possible error in the result.
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