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.
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.
If you tie a ribbon around the equator how much longer of a ribbo.
From the diagram it s pretty clear it s one foot.
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A really simple but still a little non intuitive fact about the circumference of a circle.
A fool wants to tie a rope around the earth.
Band around the earth puzzle.
From there it s not hard to believe that adding 3 feet to a rope around the actual earth would raise it almost 6 inches.
How much more rope.
A math brain teaser.
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.