1.2 m. 3 ft 11 ins. 5 ft. 1.5 m. 4 ft 11 ins. 6 ft. 1.8 m. 5 ft 10 ins. 7 ft. 2.1 m. 6 ft 10 ins ... 1 sq cm. 10,000 sq metres. = 1 hectare. 100 hectares.
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