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Numerical Ability
Height and Distance
9.A tree of height 36 meters on the side of road of width 12 meter is broken in such a way that it forms a triangle with the road. what will be the length of the broken part?
Read Solution (Total 8)
-
- let one side =x then another side will be 36-x
structure will be like this
|
x| 36-x
|__
12
now x^2+12^2=(36-x)^2
x=16
hence one part will be 16m
and another part will be 20 m - 11 years agoHelpfull: Yes(20) No(1)
- answer is 20
- 11 years agoHelpfull: Yes(11) No(5)
- let the tree b broken at a point x
so sides are:
x,(36-x) and 12m
Now, on analyzing we observe that it will form a right angled triangle
Using hypotenuse rule:
x^2+12^2=(36-x)^2
on solving, we get:
x=16 m
other part (36-x)=20 m - 11 years agoHelpfull: Yes(2) No(1)
- width of road=12 mtr
let the broken part is of x meter then remaining part will be of 36-x meter.
now we can apply theorem
x^2=(12)^2 + (36-x)^2
x=20
this is required answer.... - 9 years agoHelpfull: Yes(1) No(0)
- Since the total height of tree is 36 m. Now let x m from top, the tree gets break. So the remaining height of the tree is (36-x) m.
Now the broken part that is x m will act as hypotenuse in triangle where base is road (12 m) height is remaining tree length that is (36 - x) m and we have to find x. Now since the tree is perpendicular to the road so the tree, tree's broken part and road will form a right angled triangle. By Pythagoras Theorem we have,
(Square of broken tree part length) = (Square of road length) + (Square of rest tree length after broken)
i.e., square of x = square of 12 + square of (36-x)
which yields
x = 20 m - 9 years agoHelpfull: Yes(0) No(0)
- H2=(36-h)2+144
H=20
- 9 years agoHelpfull: Yes(0) No(0)
- broken part = 36-x m, rest = x m, 36-x,x,12 m should form a right angled triangle with hyp 36-x m. thus 12^2+x^2=(36-x)^2 => x=16 m => broken part = 36-x=20 m.
- 9 years agoHelpfull: Yes(0) No(0)
- X^2+12^2=(36-x)^2
that implies x=20 - 7 years agoHelpfull: Yes(0) No(0)
TCS Other Question
there are 5 digits 1,2,3,4,5 while making a number plate by using 1 digit,2 digits,3 digits,4 digits,5 digits how many number plates can be made with out repeatition
66 people {a1, a2,..., a66} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a65, a66}, {a66, a1}. The size of the smallest set of people such that the rest have shaken hands with at least one person in the set is
(a) 22
(b) 33
(c) 65
(d) 11