Puzzles & Quizzes

# Can You Solve the Band Around the Earth Logic Puzzle?

We're not playin' so nice with this logic puzzle. This one requires some math skills — in particular, knowledge of geometry. We found the band around the Earth puzzle on Mathisfun.com, and you can read the problem and solution below. Good luck!

## Here's the Puzzle

Someone made a band that stretches around the Earth's circumference (which is about 40,000 kilometers) in a perfect circle. One day, someone added 10 meters to the band. With this added slack, the band now magically sits just above the ground, still containing the Earth in a perfect circle.

How far is the band off the ground? Could a flea, a rabbit, or a man squeeze underneath it? Scroll down to read the answer.

## Here's the Solution

With 10 meters added to the band, it will sit approximately 1.6 meters above the surface on the Earth. This is enough room for a man to fit beneath. Knowing the circumference of a circle is 2π x r (radius), we know that with the 10 meters added to the circumference, the new equation looks like this: 40,000 km + 10 m = 2π x (r + gap). We then know that the gap must equal 10 m / (2π), which shakes out to 1.6 meters. Did you solve it?

## Watch and Learn: More Head-Scratching Logic Puzzles

#### Can You Solve the Seemingly Impossible Counterfeit Coin Logic Puzzle?

##### HARD Logic Puzzle - The Seemingly Impossible Counterfeit Coin Problem
– MindYourDecisions
Curiosity Staff