14. A 15 m long ladder reached a window 12 m high from the ground on placing it
against a wall at a distance a. Find the distance of the foot of the ladder from
the wall
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14. A 15 m long ladder reached a window 12 m high from the ground on placing it
against a wall at a distance a. Find the distance of the foot of the ladder from
the wall
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By Pythagoras theorem,
(15)²=(12)²+distance ²
225=144+distance ²
225-144=81=distance²
√81=distance
9 = distance
Wall is far away from the ladder by 9 metre
I hope this much will help you