| 144 sq. inches = 1 sq. foot |
100 sq. millimetres = 1 sq. centimetre |
| 9 sq. feet = 1 sq. yard |
100 sq. centimetres = 1 sq. decimetre |
| 43,560 sq. feet = 160 sq. rods |
100 sq. decimetres = 1 sq. metre |
| 160 sq. rods = 1 acre |
10,000 sq. metres = 1 hectare |
| 640 acres = 1 sq. mile |
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