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Q)

A ladder 50dm long when set against the wall of a house just reaches a wind

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

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A)
Let the distance of the lower end of the ladder from the wall be X m.

On using the Pythagoras theorem, we get:

X^2+48^2=50^2

X2=50^2−48^2=2500−2304=196

H = 14dm

Hence, the distance of the lower end of the ladder from the wall is 14 dm.
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