Imagine you have a piece of string long enough to stretch around the earth (40,074 km or 4,007,400,000 cm). Then you take an extra meter of string and add it to the string around the Earth. Now you spread this extra string around the Earth, supporting it somehow, so that the string forms a circle off the ground. Imagine the newly spread string traces the trajectory of a satellite.
How high off the ground would the string be?
Repeat the experiment with a basket ball, also adding one meter of string. How high off the basketball would the string be?
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