Latest Elitmus Aptitude Question SOLUTION: a pole rests against a wall, and the tip of the pole is at a height of 8m. after sometime the pole slips back by 4m and falls on the ground. what is the length of the pole?

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(#M40152480) ELITMUS Numerical Ability question Keep an EYE

a pole rests against a wall, and the tip of the pole is at a height of 8m. after sometime the pole slips back by 4m and falls on the ground.

what is the length of the pole?

Asked In Elitmus Anisha Roy (8 years ago)

Unsolved Read Solution (8)

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Gaurav Verma  (8 years ago)

10.
let the distance from of the ladder from the pole be x meter. A/c to Pythagoras th., ladder= root_under( x^2 + 64).
In the second case, when the ladder moves 4 m , i.e distance from the pole = x+4, it touches the ground, means the length of ladder = x+4.
Now, equating the both lengths we get x=6, length = x+4 =10

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Pankaj Kumar  (8 years ago)

let the length of the pole is = L.
Now
before slide
L=((8^2)+(L-4)^2)^1/2
L=10
For batter imagination draw a diagram

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sameer yadav  (8 years ago)

10
Tricky question . solved with options.

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mariselvam  (8 years ago)

BY USING RIGHT ANGLE TRIANGLE METHOD H=8m b=4m
ans is square root of 80

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nashrah  (7 years ago)

no ladder in ques

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sameer yadav  (8 years ago)

Hey anisha have u attempt dat question in P.S related to area of two quadrilateral and parameters .
If yes den plz share ur answer

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Rohit Sharma  (8 years ago)

sameer yadav can u explain that how can we solve this question by options

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ABHISHEK MISHRA  (6 years ago)

if we consider a triangle having sides(3,4,5) then T will be 56, but if we consider a triangle of sides(3,5,6) then aplying Heros formula we get a fractional value of area of triangle hence value of T will also be fractional... hence correct option will be (a) can be fractional as in this option there is a "CAN"

one more thing when you are taking the sides of a triangle on your own then make sure that sum of two sides is always greater than third side.....you cant take any value to any sides that is the property of a triangle otherwise triangle cannot be formed.
and like wise difference of any two sides will be less than third side.


correct option is (A) can be fractional

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