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A 30-foot guide wire is attached to the top of the tree and then staked into the ground 25 feet away from the base of the tree.

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Answer:

16.6 feets .

Step-by-step explanation:

Length of wire = 30 feets

Distance between base of tree and ground = 25 feets

Height of tree, h

Using Pythagoras rule :

h² = 30² - 25²

h² = 900 - 625

h² = 275

h = sqrt(275)

h = 16.583

h = 16.6 feets

Height of tree is 16.6 feets

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