a ladder is placed in such a way that it reaches a window 12 metre height from the ground and on placing it against a wall at a distance of X metre if the length is 15 then the distance of foot of the ladder from the wall
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Answer:
wall height is 12m
ladder height is 15m
then distance from wall to ladder is
15square-12square =15*15 -12*12
=225-144=81
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