Tolong dijawab besok dikumpulkan​

Jawaban:

1. L = 80 x 60 = 480 cm²

3. L = 1/2 × 60 x 40 = 120 cm²

4. L = 10 x 8 = 80 m²

5. L = 1/2 × 10 x 24 = 120 cm³