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Period of revolution of the moon is 27.3...

Period of revolution of the moon is 27.32 days and its mean distance from earth is `384,400km`. Use the equation
`M_(1)+M_(2)=(4pi^(2))/G.(a^(3))/(T^(2))`
to calculate the sum of the masses of the earth and moon. Further, using the known fact that the earth moon system lies ate `4.75xx10^(6)m` from earth's centre, calculate the mass of each.

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