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What is the height of the pile of books located on the lawn?

What is the height of the pile of books located on the lawn?-example-1
User Kartheepan
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Explanation:


\tan( \alpha ) = (8)/(18) = (8 + 15)/(x) \\ (8)/(18) = (23)/(x) \\ 8x = 414 \\ x = 51.75

User Pratik Gaurav
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