36 throws because you divide 60 by five and get 12 and then multiply 3 by 12 giving you 36, are you sure this is high school
ST = 1/2 (RV) = VQ = 6
answer
ST = 6
hope it helps
Since 9 goes into 18 and 45, and both of the integers has a y2, the GCF is 9y2