Sputnik I had a mean orbital radius of 696?

Question by srmlaunch: Sputnik I, the first artificial satellite to circle the planet (October 1957) had a mean orbital radius of 696?
Sputnik I, the first artificial satellite to circle the planet (October 1957) had a mean orbital radius of 6960 km. Compute its period.

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Answer by Nick
satellite orbit period (T) = 96.259663648805 minutes.
Use the link below to calculate the time period using Kepler’s laws.
Used Mass of Earth is 5.98E+24kilograms.

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