A fool wants to tie a rope around the earth.
Rope around the earth brain teaser.
His neighbour also a fool wants to do the same only he wants the rope on sticks 1 meter above the ground.
A math brain teaser.
How much more rope.
You come along at night as a practical joke and add just 10 meters to its length one hundredth of one kilometer.
If you tie a ribbon around the equator how much longer of a ribbo.
Band around the earth puzzle.
So he buys a rope of 40 000 km and ties it around the world.
The circumference of the earth is approximately 40 000 kilometers and someone has just made a metal band that circles the earth touching the ground at all locations.
A really simple but still a little non intuitive fact about the circumference of a circle.
In fact this brain teaser requires neither an exact measurement of the earth s circumference which in fact varies by many kilometers depending on which circumference you measure nor even an assumption that the earth has a circular cross sect.
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