Perimeter is all the outside dimensions added together.
Area is length x width of each shape added together.
1. Perimeter = x + x + 1 + 1 + x + 1 +x +1 + (x-1)+1 + x
Simplify by combining like terms:
5x + (x-1) + 5 = 4x +4
Area = x^2 + 1x + 1^2 + 1x
Simplify:
x^2 + 2x +1
2. Perimeter: x +1 + x+1+x+1+x+1+x+1+x+1
Simplify: 6x +6
Area: 1x + 1^2 + 1x +1^2 +1x
Simplify: 3x + 2
3. Perimeter: y+y+1+1+1+1+y-1+1+y
Simplify: 4y + 4
Area: y^2 + y +1
4. Perimeter: 1+x+x+x-1+1+1+1+x+x+1+1
Simplify: 5x + 7
Area: 1^2 + 1^2 + 1x +x^2
Simplify: x^2 + x + 2
