### Brain Teasers

# Sevenlegs O'Lucky

A room is 3 metres high by 4 metres wide by 5 metres long. In the middle of one of the end (smaller) walls is Mad Ade's pet spider, called SevenLegs O'Lucky. In the topmost corner of the opposite end wall he has spotted a female spider, in a blonde wig and eight bright blue contact lenses. SevenLegs O'Lucky wishes to get better acquainted with the female.

What is the length of the shortest distance SevenLegs O'Lucky must scuttle to do that?

What is the length of the shortest distance SevenLegs O'Lucky must scuttle to do that?

### Answer

Sqrt(46.25) or 6.8 metresHide Answer Show Answer

## What Next?

View a Similar Brain Teaser...

If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.

### Solve a Puzzle

## Comments

Care to explain?

He's got to go from the center of one wall (4x3) to the far corner of an adjacent wall (5m along the distance he has to travel). If he follows the hypotenuse of a right triangle (if the walls were flattened out), the sides of the triangle are 2 and 5+1.5. Going the other way, the sides would be 1.5 and 7, which would be longer.

Interesting because there are 3 different "straight line" paths one can consider depending on how you 'fold out flat' the room. The first (longest) one is down, across the floor and up the opposite wall which is about 9.7 m. The second is he goes across obliquely to the side wall and up the side wall diagonally which is about 8.2 m. Finally, the shortest straight line path is up and across the ceiling - the given answer.

To post a comment, please create an account and sign in.

## Follow Braingle!