Cupid the Caterpillar

Geometry Level 2

A cubical room has edge length 10 feet with A and B denoting two corners that are farthest apart. A caterpillar named Cupid decides that he wants to crawls from corner A to corner B along the walls. In feet, what is the length of the shortest path from A to B that the caterpillar may have taken? If your answer is a b a\sqrt{b} find a + b a+b .


The answer is 15.

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1 solution

Rohan Rao
Mar 1, 2014

The shortest distance between two points is a straight line. Open out the room into a 2d open box shape. The straight line joining them is the hypotenuse of a right triangle with sides of length 20 and 10. The hypotenuse is then 10 sqrt5. The answer is 10+5=15.

Hey! Perfect! I thought I would be the only one to solve it by creating a net. Great job! By clicking "Reveal Solutions", I accidentally just got my own problem wrong. Oops!

Finn Hulse - 7 years, 3 months ago

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Thanks Finn!

Rohan Rao - 7 years, 3 months ago

I also did the same thing .......

ashutosh mahapatra - 6 years, 11 months ago

great work!!!

devansh shringi - 7 years, 3 months ago

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