Because it is 1000 metres. the prefix kilo- means 1000. thus, kilometre means 1000 metres.
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
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...
km
no, it is nearly 9 times more