Tolong jawab ya mksh

a.AD/PS=AB/PQ
4/6=16/PQ
4×PQ=6×16 (perkalian silang)
4PQ=96
PQ=24 cm

b.Luas persegi panjang PQRS
=p×l
=24×6
=144 cm²

Keliling persegi panjang PQRS
=2p+2l
=2(24)+2(6)
=48+12
=60 cm