SOLUTION: Suppose a wire is stretched tightly around Earth. (The radius of Earth is approximately 6400Km). Then suppose the wire is cut and its length is increased by 20 km. It is then place
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Question 346000: Suppose a wire is stretched tightly around Earth. (The radius of Earth is approximately 6400Km). Then suppose the wire is cut and its length is increased by 20 km. It is then placed back around the planet so that it is the same distance from Earth at every point. Could you walk under the wire?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Treat the Earth as a sphere.
The perimeter would be the circumference of a circle with radius 6400 km.
km
Now if we add 20 km,
km
Find the radius of the circle with that perimeter,
km
The difference in radii is
km
You could easily fit yourself under that, in fact, on a cloudy day you wouldn't even see the wire.
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