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CBSE Class 7 Answered

A 15m long ladder reached a window 12m 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
Asked by simmityagi950 | 15 Sep, 2019, 01:14: PM
answered-by-expert Expert Answer
 
 
By Pythagoras Theorem, we get
 
(Distance of the foot of the ladder from the wall)2= 152 - 122
                                                                        = 225 - 144
                                                                        = 81
 
→ Distance of the foot of the ladder from the wall = 9m

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