Question 1016323
Draw the description.  Note that  the order goes P, Q, S, R, T with endpoints P and T.


QS=SR and Because QR=8, then QS=SR=4=PQ.


{{{4+4+4+RT=34}}}
{{{RT+12=34}}}
{{{RT=34-12}}}
{{{RT=22}}}-------answer