a ladder of 20 m long is kept inclined to reach a window of16 m height . how far the wall should the foot of the ladder rest
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A ladder of 20 m long is kept inclined to reach a window of 16 m height . How far the wall should the foot of the ladder rest.
Height of ladder = 20m
Height at which the window is located = 16m
Now, since it is forming a right angled triangle,
Therefore,
20² = 16² + X²
400 = 256 + X²
400 - 256 = X²
144 = X²
X = √144
x = 12m
So the distance at which the ladder should be placed is 12m from the house.
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