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 How far up a wall will an 11m ladder reach, if the foot of the ladder is 4m away from the wall?
  • a)
    121 m
  • b)
    10 m
  • c)
    10.2 m
  • d)
    16 m
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
How far up a wall will an 11m ladder reach, if the foot of the ladder ...
The height of wall will be the perpendicular for the right angle triangle. So applying pythagoras theorem
H2=P2+B2
11*11=P2+16
P=121-16=10.2 cm
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Most Upvoted Answer
How far up a wall will an 11m ladder reach, if the foot of the ladder ...
The height of wall will be the perpendicular for the right angle triangle. So applying pythagoras theorem
H2=P2+B2
11*11=P2+16
P=121-16=10.2 cm
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Community Answer
How far up a wall will an 11m ladder reach, if the foot of the ladder ...
Using Pythagoras theorem
H^2=P^2+B^2
11^2=P^2+4^2
121-16=P^2
105=P^2
P=10.2
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