As we know that the perimeter is defined as the sum of the sides.
In the given diagram, we have a parallelogram
The parallelogram has sides AB, AC, CD and BD
Its perimeter(P) can be given as below
[tex] P=AB+AC+CD+BD\\
\\
\
P=6+6+8+8,AC=BD=6,AB=CD=8\\
\\
P=12+16\\
\\
P=28\\ [/tex]
