A ladder 17m long reaches a wall 15cm high, How far is the foot of the
the ladder from the wall?
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Answered by
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Answer=8m
Step-by-step explanation:
Answer
Let AC be the ladder, AB be the wall.
Then in △ABC,
AC
2
=AB
2
+BC
2
(Pythagoras theorem)
17
2
=15
2
+BC
2
BC
2
=8
2
BC=8 m
Hence, the foot of the ladder is 8 m from the wall.
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