tolong kerjakan nomor 8dan9

(5×2)×(12×2)
8. Luas ------------------ = 120 cm2
2
Keliling = √ (5×5 + 12×12) = 13 cm
13 cm × 4 = 52 cm
24 × 16
9. Luas = ---------------- = 192 cm2
2
Keliling = 5+5+10+10= 30cm