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OY! You didn't just alter the title, you altered the whole goddam post! Now you've made me look stupid by answering a question you didn't ask [!]
Circumference(C) = 2πR Increase by 1m =>C+1 = 2π(R+x) where x is the increase in radius (how much it would be above the ground) so 2πR+1 = 2π(R+x)x = 1/(2π) = 15.9154943 cm (approx)No need to know the size of the earth