Brain Teasers
Planes Apart
Two planes fly once around the world together.
They both fly at a constant distance above the
surface of the Earth, one above the other.
On completion, one of the planes has travelled
two kilometres further than the other.
(Assume the Earth is a perfect sphere.)
How far apart (in metres) were the two planes?
They both fly at a constant distance above the
surface of the Earth, one above the other.
On completion, one of the planes has travelled
two kilometres further than the other.
(Assume the Earth is a perfect sphere.)
How far apart (in metres) were the two planes?
Answer
1000/pi [or 318.3 metres]Hide Answer Show Answer
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