Answer:
508.68
Step-by-step explanation:
Upper and lower surfaces of the cylinder:
[tex]\pi r^{2} =9\pi \\S=2*9\pi =18\pi[/tex]
Side area of the cylinder:
[tex]S=sh=\pi dh=6\pi *3*8=144\pi[/tex]
The total area:
[tex]S=114\pi +18\pi =162\pi =162*3.14=508.68[/tex]
