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a 15 m ladder is played against a wall to reach a window 12 m high find the distance of the foot of the ladder from the wall
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a 15 m ladder is played against a wall to reach a window 12 m high fin...
By Pythagoras theorem, 

(15)2=(12)2+distance 2

225=144+distance 2

225-144=81=distance2

√81=distance 2
9 = distance 

Wall is far away from the ladder by 9 metre 
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a 15 m ladder is played against a wall to reach a window 12 m high find the distance of the foot of the ladder from the wall Related: RD Sharma Solutions - Ex-15.4, Properties Of Triangles, Class 7, Math
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