How many kilometres in one square kilometre?

A kilometer is a distance, A distance of 1 kilometer. A square kilometer is an area that has a boundry around it that is 4 kilometers long

There are 10,000 square meters in a hectare, which is equal to 0.01 square kilometers.

1 square kilometre = 100 hectares. To convert a value in square kilometres to hectares, multiply by 100.

there are 100 hectares in 1 square kilometre

This question cannot be answered sensibly. A square kilometre is a measure of area, with dimensions [L2]. A kilometre is a measure of distance, with dimensions [L]. The two measure different things...