Since $x=3$, the side lengths of the figure are $4,3,6$, and 10. Thus, the perimeter of the figure is $4+3+6+10=23$. (Alternatively, the perimeter is $x+6+10+(x+1)=2x+17$. When $x=3$, this equals $2(3)+17$ or 23.)
What is the perimeter of the figure shown if $x=3$?