Posted by ---- on Tuesday, January 10, 2012 at 7:47am.
You will need to look up the density of copper. Call it p. It is about 8.94 g/cm^3
The mass is pi*r^2*L*p
L and r should be in cm to get the mass in grams. r = 20.0 cm; L =[ 150 cm.
The mass will not depend upon whether it is standing on an end or the side
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