Correction for the size of Christchurch
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How big is 20 hectares?
It's about one-three-thousandth as big as Christchurch
The size of Christchurch is about 60,700 hectares.
(a.k.a Ōtautahi) (urban area) (New Zealand)
Ōtautahi Christchurch, New Zealand's gateway to Antarctica, measures 60,700 hectares in total area.