Correlated means that they relate so probably this might help
Perimeter=4h+4
If the base is 2 more than the height, it gives us the equation:
b=h+2
The equation for the perimeter of a rectangle can be though of as 2b+2h, so substituting in (h+2) for b from the first equation, we get 2(h+2)+2h.
This can be simplified to be 2h+4+2h or 4h+4
I believe u can put 5 books on there
The answer is 193 because, you have to add the numbers up
-2 pretty sure hope this helps