| 1 a = 100000000 mm² |
| 2 a = 200000000 mm² |
| 3 a = 300000000 mm² |
| 4 a = 400000000 mm² |
| 5 a = 500000000 mm² |
| 6 a = 600000000 mm² |
| 7 a = 700000000 mm² |
| 8 a = 800000000 mm² |
| 9 a = 900000000 mm² |
| 10 a = 1000000000 mm² |
| 15 a = 1500000000 mm² |
| 50 a = 5000000000 mm² |
| 100 a = 10000000000 mm² |
| 500 a = 50000000000 mm² |
| 1000 a = 100000000000 mm² |
| 5000 a = 500000000000 mm² |
| 10000 a = 1000000000000 mm² |