A can usually has the shape of a cylinder.

A standard can with a volume of $0{.}25\ \mathrm{l}$ has a diameter of $52\ \mathrm{mm}$ and height $132\ \mathrm{mm}$, and $10{.}7\ \mathrm{g}$ of aluminum is used for its production. A special offer “$30 \%$ free” will use cans with a volume of $0{.}33\ \mathrm{l}$, diameter $63\ \mathrm{mm}$ and height $117\ \mathrm{mm}$.

How will the material consumption change for one can? Also by $30 \%$, or by a different ratio?

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