what is the surface area of a cylender with the hight of 16mm and the diameter being 8 mm

Surface area =

2 * pi * (diameter / 2)^2 + 2 * pi * (diameter / 2) * height ......so we have...

2 * pi * ( 8/2)^2 + 2 * pi * (8 / 2) * 16 =

2 * pi * (4)^2 + 2 * pi * (4) (16) =

2 * pi [ 4^2 + 4 * 16]

2 *pi (16 + 64) =

2 pi ( 80) =

160 pi mm ^2 ≈ 502.65 mm^2