GreenlightTestPrep wrote:

Each edge of the above cube has length 1. If an ant walks from point A to point B along the OUTSIDE of the cube, what is shortest distance the ant must travel?

A) √3

B) 2

C) √5

D) √6

E) √7

If we open up the cube, we get something like this....

Let x = the distance from A to B

Since we have a right triangle, we can apply the Pythagorean Theorem to get: 1² + 2² = x²

Simplify to get: 1 + 4 = x²

So, 5 = x², which means x = √5

Answer: C

Cheers,

Brent

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Brent Hanneson – Creator of greenlighttestprep.com

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