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Question

A ladder 50 dm long when set against the wall of a house just reaches a window at a height of 48 dm. How far is the lower end of the ladder from the base of the wall?

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Solution


Let the distance of the lower end of the ladder from the wall be X m.On using the Pythagoras theorem, we get: X2+482=502ā‡’X2=502-482=2500-2304=196ā‡’X=14 dmHence, the distance of the lower end of the ladder from the wall is 14 dm.

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