If 2/5 of the tree is above the building, the other 3/5 must be down next to the building.
3/5(tree) = 9m
Multiply each side by 5/3 :
tree = (5/3) (9) = 15 meters
9 + ( 2 / 5 )*h = h =>45 + 2h = 5h => 45 = 3h => h = 45 / 3 => h = 15 metres.
The height of the tree is 22.5 meters. This is calculated by using the proportion of the tree's height that is above the building. Specifically, 5 2 of the tree's height equals the height of the building, which is 9 meters.
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