Latest TCS Aptitude Question SOLUTION: ..Ant is at midpoint of one end of tetrahedron of length 5cm.Shortest path length to travel to midpoint of opposite edge?

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..Ant is at midpoint of one end of tetrahedron of length 5cm.Shortest path length to travel to midpoint of opposite edge?

Asked In TCS MD (11 years ago)

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Vinay Jain  (11 years ago)

The answer is 5, and here is the explanation

But first lets see what a regular tetrahedron is:- It has four equilateral triangles, one at the base and other three stand on the edges of the base triangle and meet each other at the top.
See this to clear confusions:- http://www.youtube.com/watch?v=Aro-_wFUpFo

Since the ant is at the midpoint of one edge and it want to go to midpoint of another edge it has to travel :
(From midpoint of source edge to the common vertex) + (from common vertex to midpoint of destination edge)

2.5 + 2.5 = 5 cm Ans

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Akhil Reddy  (11 years ago)

I think its root(2.5^2+2.5^2) = 2.5root(2)

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anish kumar  (10 years ago)

(((root 3)/2)*5)+2.5

first rise up via height of traingle=1st term
then up to middle point=2nd term

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Tanu  (11 years ago)

@MD Please provide the correct answer if you know

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