Given that triangles OPQ and RST are similar triangles, the measure of side ST is: 75.3.
The ratio of the corresponding sides of two similar triangles are always equal, meaning the sides are proportional to each other.
Given:
Since Triangle OPQ is similar to triangle RST, therefore:
RS/OP = ST/PQ
Substitute
RS/17 = 31/7
Cross multiply
RS = (31 × 17)/7
RS = 75.3
Learn more about similar triangles on:
https://brainly.com/question/11920446