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posted by mary on Saturday, August 14, 2010 at 11:38pm.
solve for variable h s equals 2 pie rh +2 pie r squared
Looks like the surface area of a cylinder. S = 2 pi r*h + 2 pi r^2 h = {S - 2*pi*r^2)/(2*pi*r) = S/(2*pi*r) - r
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