A rectangular piece of metal of width W and length L is cut from a plate of thickness T. If W, L, and T are independent random variables with means and standard deviations as given here and the density of the metal is 0.08 g/cm3, what would be the estimated mean and standard deviation of the weights of pieces produced by this process?

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Mean 10 cm 20 em 3 cm Standard Deviation 0.2 cm 03 cm 0.1 cm Variable