She purchased a kilometre of fibre-optic cable and commandeered her farm tractor to dig a trench.
BBC(Dec 25, 2016)
The scientists considered that land up to a kilometre on each side of a road was affected, which they believe is a conservative estimate.
The Guardian(Dec 15, 2016)
About 100,000 civilians are trapped in besieged eastern Aleppo in a rapidly shrinking space – less than a few square kilometres.
The Guardian(Dec 14, 2016)