tolong jawab pake cara ya cepepetttt y pleasee!

keliling = 2x(ab+bc)
66=2x(20+bc)
66= 40+2bc
66-40=2bc
26=2bc
bc=26/2
bc= 13

cari diagonal ac
1. cari jarak a ke pusat
ao^(maksudnya kuadrat) = ab^-bo^
ao^= 20^-12^
ao^=400-144
ao^=256
ao = akar (256)
ao = 16

2. cari jarak c ke pusat
co^=bc^-bo^
co^=13^-12^
co^=169-144
co^=25
co = akar (25)
co = 5

jadi diagonal ac = 16+5=21

luas = 1/2×ac×bd
= 1/2×21×24
= 252