Metric unit of measurement put prefix in front of the base unit. For ex decimeter: prefix deci means one-tenth, so one decimeter means one-tenth of a meter.

a. Which latin prefix means one thousand?
b.Which latin prefix means one-thousandths?
c.What is the other name of 10 000 square metres?

a. The Latin prefix that means "one thousand" is "kilo-". For example, kilogram means one thousand grams, and kilometer means one thousand meters.

b. The Latin prefix that means "one-thousandths" is "milli-". For example, millimeter means one-thousandth of a meter, and milligram means one-thousandth of a gram.

c. The other name for 10,000 square meters is "hectare". It is a unit of area commonly used in agriculture and land measurement. One hectare is equal to 10,000 square meters.