Question

A ladder 3.5 m long is placed against a perpendicular wall with its foot 1.0m from the wall. How far up the wall (to the nearest centimetre) does the ladder reach? If the foot of the ladder is now moved 30cm further away from the wall, how far does the top of the ladder fall?] 3mks

Answer 1

Answer:

0.10 m or 10 cm

Step-by-step explanation:

Distance up the wall, AB =   = 3.35 m  by Pythagoras.  

 

Hence, the amount the top of the ladder has moved down the wall, given by AA = 3.35 – 3.25  

                                                                                                                                 = 0.10 m or 10 cm

Answer 2

Answer:

Final Answer.

Step-by-step explanation:

Given,

Length of ladder = 3.5m

Distance up the wall, AB =   = 3.35 m  by Pythagoras.  

Hence, the amount the top of the ladder has moved down the wall, given by AA = 3.35 – 3.25  = 0.10 m or 10 cm

There, the correct answer will be: 10cm.

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