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Volume of mercury = pr^2h
pr^2h = 2cm^3
then 22/7 x r^2 x 1.5 = 0.000002
r^2 = (0.000002 x7)/(22 x 1.5)
r = 2.0597 x 10^-7m
joseph rimiru answered the question on October 16, 2017 at 14:58
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