How we convert Kilometer into hectare?

Please restate the question. The question in its current form is not one that can be answered as kilometer is a measurement of length (1000 m = 1 kilometer) whereas hectare is a measurement of area ( 10000 m^2 = 1 hectare ). If the question was proposed as: How many hectares are in an area of a square with sides of 1 kilometer? Answer is 100 hectares.