A $10\mathrm{.}9-$kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of $10\mathrm{.}3$ m$/$s$,$ determine the following. $($a$)$ the translational kinetic energy of its center of gravity J $($b$)$ the rotational kinetic energy about its center of gravity J $($c$)$ its total kinetic energy J