Since RT bisects SU, we can imply that
SV=5
Notice that, since SV=VU, triangles VST and VUT are congruent triangles due to the SAS postulate; therefore,
ST=23.
Similarly, triangles VSR and VUR are congruent due to the SAS postulate (both share side RV, have a right angle, and SV=UV); thus,
UR=8
Finally, notice that
Thus, SU=10