23. A ladder is placed against a 8m high wall in such a way that the foot of ladder is om away from
the wall. Find the length of the ladder.
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Answer:
Let AC be the ladder and BC be the wall . Then,
In right △ ABC,
AC
2
=AB
2
+BC
2
AC
2
=(2.5)
2
+(6)
2
AC
2
=42.25
AC=6.5 m
Hence, the length of ladder is 6.5 m.
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