Ten Thousand Meters Squared
Puzzle 9 of Sailing Hard Pack
Question is: Ten Thousand Meters Squared
and the answer is: HECTARE
Word Meaning:
HECTARE — A unit of surface area (symbol ㏊) equal to 100 ares (that is, 10,000 square metres, one hundredth of a square kilometre, or approximately 2.5 acres), used for measuring the areas of geographical features such as land and bodies of water.
Definitions from Wiktionary.