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A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?
  • a)
    6.2 m
  • b)
    6.5 m
  • c)
    6.8 m
  • d)
    7.5 m
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A ladder is resting against a vertical wall and its bottom is 2.5 m aw...

AB = CD = x = Length of ladder
Let OC = y m
y2 + 3.92 = x2
(y+0.8)2 + 2.52 = x2
So y2 + 3.92 = (y+0.8)2 + 2.52
y = 5.2m
x= √(5.22+3.92)
x= 6.5m
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Most Upvoted Answer
A ladder is resting against a vertical wall and its bottom is 2.5 m aw...

AB = CD = x = Length of ladder
Let OC = y m
y2 + 3.92 = x2
(y+0.8)2 + 2.52 = x2
So y2 + 3.92 = (y+0.8)2 + 2.52
y = 5.2m
x= √(5.22+3.92)
x= 6.5m
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Community Answer
A ladder is resting against a vertical wall and its bottom is 2.5 m aw...

AB = CD = x = Length of ladder
Let OC = y m
y2 + 3.92 = x2
(y+0.8)2 + 2.52 = x2
So y2 + 3.92 = (y+0.8)2 + 2.52
y = 5.2m
x= √(5.22+3.92)
x= 6.5m
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A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?a)6.2 mb)6.5 mc)6.8 md)7.5 mCorrect answer is option 'B'. Can you explain this answer?
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