Kilometre n. : A measure of length, being a thousand meters. It is equal to 3,280.8 feet, or 62137 of a mile.

Example:
How do i implement a WiFi hotspot to effectively cover i Kilometre radius with good signal strenght.?

Taxonomy
kilometre, pronunciation, statute miles, free encyclopedia, the metric system, 10-27, free dictionary, Cubic kilometre, Square kilometre, symbol, the distance, United States, the United Kingdom, road signs, kay, syllable, stress pattern, Darwin.

Defination from the web:
kilometre equals approximately 0.6214 statute miles, 1094 yards, or 3281 feet. ... picometre <<< nanometre <<< micrometre <<< millimetre < centimetre < decimetre < metre < decametre < hectometre < kilometre <<< megametre <<< gigametre ...