Answer:
the answer is the option D
[tex]4\ units[/tex]
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The figure is a parallelogram
In a parallelogram,the diagonals bisect each other
so
[tex]8=2x[/tex] ------> [tex]x=4\ units[/tex]
[tex]12=3x[/tex] ------> [tex]x=4\ units[/tex]
