The volume of a cylinder can be calculated by using the equation $V=r^{2}h,$ where $V$ is the volume, $r$ is the radius, and $h$ is the height. Estimate the volume of a piece of $4$ gauge platinum that is $8\mathrm{.}72cm$ long. The diameter of $4$ gauge wire is $5\mathrm{.}189mm.$ Hint: Don't forget to convert to radius and make the units agree before solving this problem.

A standard sheet of paper is $21\mathrm{.}59cm27\mathrm{.}94cm.$ There are two ways to bend it into a cylinder, a thin tall cylinder or a wide$-$short cylinder. Describe each method and calculate the volume of each.