Q. 153.7( 11 Votes )

A ladder 10 m lon

Answer :

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Let AB be the ladder and CA be the wall with the window at A.


Let the distance of foot of ladder from base of wall BC be x.


Also, AB = 10m and CA = 8m


From Pythagoras Theorem,


we have: AB2 = BC2 + CA2


(10)2 = x2 + 82


x2 = 100 – 64


x2 = 36


x = 6m


So, BC = 6m.


Length of the ladder is 6m.


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