Question

Find an expression for the perimeter of the figure.

Answer 1

16z+10

Explanation:

The explanation is in the attached file below

Answer 2

10z+20

Explanation:

The perimeter is the sum of all the side lengths. Starting at the top left corner and going clockwise:

2z+z+5+10+5+z+2z+4z

Combine like terms

2z+z+z+2z+4z+5+5+10

10z+20