Work Step by Step
Opposite sides of a parallelogram are congruent. So if $RS=5.3$, then $VT=5.3$; and if $ST=4.1$, then $VR=4.1$. $5.3+5.3+4.1+4.1=18.8$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.