question_answer

                                   A ladder 2.6 metres long reaches a window 2.4 metres above the ground. Find the distance at which the foot of the ladder lies away from wall.

A)  1.6 metres        

B)  1.2 metres         

C)  0.6 metres                    

D)  1 metre

Correct Answer: D

Solution :

(d): \[x=\sqrt{{{2.6}^{2}}-{{2.4}^{2}}}=\sqrt{1}=1\]metre.