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In the given figure, let points 'A' and 'B' represent the top of the tree and the base of the tree, respectively and let 'C' represents the point on the ground that is 'x' metres away from the base of the tree (BC = x).In right triangle ABCtan 60o = (AB/x)Or, (54/x) = √3So, x = 54 ÷ √3 = 18√3 metres
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