No 6-7 Tolong pakai jalan ya

luas layang layang = (diagonal 1 × diagonal 2) / 2
432 = (AC×BD)/2
432 = (36×BD)/2
432×2 = 36BD
BD = 864/36 = 12 cm

(7×12)/2 + 15×12 + (9×12)/2 = 42 + 180 + 54 = 276 cm²

luas layang layang = (diagonal 1 × diagonal 2) / 2
432 = (AC×BD)/2
432 = (36×BD)/2
432×2 = 36BD
BD = 864/36 = 12 cm

(7×12)/2 + 15×12 + (9×12)/2
= 42 + 180 + 54
= 276 cm²
Jadi jawabannya adalah (276 cm)
Maaf kalok Salah ya