1.

ding by the side of a building 2 th of the height of the tree is above the buildinglevel. The building is 9 metres high. What is the height of the tree?

Answer»

Let the height of the tree = H meters

The part of the tree that is visible = 2/5 * H

The part which is hidden by the building = H - 2/5 * H = H * [ 1 - 2/5 ] = 3/5 * H

The part hidden of the tree = the height of the building 3/5 * H = 9 meters H = 9 * 5 / 3 = 15 meters



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