Hello there!
Take note: When finding the perimeter, we need to remember to always add. When finding the perimeter, we do not multiply, we do addition.
So, let's add them all up!
[tex]\boxed{2.3+3.6+6.2+4.2+2.3+4.5}= \boxed{\boxed{23.1}}[/tex]
The perimeter of this hexagon would sum up to be 23.1 (option c)
I hope this helps you!