The coefficient of the second term is the 3 in (4x+3y)
Perimeter is the boundary/outline/ surrounding
For example if you measure around your house that would be the perimeter.
Area is the size of something.
Like if you wanted to know the amount of space in a box.
ANSWER IS C because I looked it up
16 squared = 256
14 squared = 196
256 + 196 = 452.