find the surface area of this cylinder round to the nearest tenth

Step-by-step explanation:
The surface area of a cylinder is given by
[tex]A = 2\pi r^2 + 2\pi rL[/tex]
[tex]\:\:\:\:=2\pi(3\:\text{cm})^2 + 2\pi(3\:\text{cm})(12\:\text{cm})[/tex]
[tex]\:\:\:\:= 282.7\:\text{cm}^2[/tex]