Find The Distance Between Their Top ? If

Two poles of height 7 m and 12 m stand on a plane ground. If the distance between their feet is 12, the distance between their top will be

  1. 13 m
  2. 19 m
  3. 17 m
  4. 15 m
Anurag Mishra Professor Asked on 12th August 2015 in Maths.
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1 Answer(s)

Answer: (1) 13 m

Explanation:-
Let the distance between their top will be X m.

In right triangle A D E
AE2 = DE2 + AD2   (By Pythagoras theorem)
Then, X2 = 52 + 122
X2 = 25 + 144
X2 = 169
Square root on both side,
X = 13 m
Then, the distance between their top will be 13 m.
Hence, the answer is (1) 13 m.

Anurag Mishra Professor Answered on 13th August 2015.
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