The answers is 11x+2 I’m pretty sure. I can’t tell if your x3 was an exponent or multiplying.
The perimeter is the sides of the hexagon. One of the hexagon edges is shared with a rectangular face. Solve for that edge. 78/6=13. The height is the length and edge is the width. Area is length(16) times width(13). 16•13=208. The answer is 208mm^2
Two events that can’t happen at the same time