Tolong yaaa kak sama jawabanya

PS=QR=13
RS:PQ=5:7
maka jika RS= 5x PQ=7x

KLL= PQ + QR + RS + PS
86= PQ + 13 + RS + 13
PQ + RS= 60

7x+5x=60
12x=60
x=5

SR=25
PQ=35 
(A)