Tolong jwb no 31 pliss#thx

p : l= 3x : 2x
p × l= 3x × 2x= 96
p × l= 6x²= 96
p × l= x²= 16
p × l= x= √16 = 4

p= 3x= 3(4)= 12, l= 2x= 2(4)= 8
keliling persegi panjang
= 2(p+l)= 2(12+8)= 2(20)= 40