Hectare
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The hectare is a non-SI metric unit of area equal to a square with 100-metre sides, that is, 10,000 square metres, and is primarily used in the measurement of land. There are 100 hectares in one squar
St. Enda's GAA ground, in Omagh. The playing field used in Gaelic football and hurling is a little over a hectare in size.
Trafalgar Square has an area of about one hectare.
Metre
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The metre is the base unit of length in the International System of Units. Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of 1/29
Replicas of historical metric standards, including a copy of the Mètre des Archives