a ladder is placed against the wall. the distance of the foot of the ladder from the wall is 5m and reaches a window 12m above the ground.find the length of the ladder??
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anirudkaithayil:
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Answer:
(Length of ladder) ^2= (distance from foot)^2 + (height of window)^2
=12^2 + 5^2
=144 + 25
=169
Therefore length of ladder=square root of 169
=13m
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