Q3 of 53 Page 156

A staircase of length 6.5 meters touches a wall at height of 6 meter. Find the distance of base of the staircase from the wall.

Length of staircase = 6.5 metres


Height of Wall = 6 metres


Let the distance of base be d


Applying Pythagoras theorem


d2 = 6.52 – 62


⇒ d2 = 6.25


⇒ d = 2.5 metres


Distance of base = 2.5 m


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