Question

Guys, please please help me

Answer 1

508.68

Explanation:

Upper and lower surfaces of the cylinder:

`\pi r^(2) =9\pi \\S=2*9\pi =18\pi`

Side area of the cylinder:

`S=sh=\pi dh=6\pi *3*8=144\pi`

The total area:

`S=114\pi +18\pi =162\pi =162*3.14=508.68`