A cylindrical container needs to be manufactured so that its volume is precisely 27 cm. Find the optimal radius r and height h of the cylindrical container that minimises the total surface area. (Note: a cylinder of radius r and height h has volume V = rh, and total surface area A = 2 +2arh.) Or =V cm and k = cm O r= cm and h = cm 2m = cm and h= cm 12 cm E cm andh= O None of the other options.

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