Even in solids there is a small space between the atoms. Depending on how tight the atoms are packed determines the density of matter. This means that a one inch block of wood is not as dense as a one inch block of gold. There is more space between the atoms of the wood than the atoms of the gold.
The total area of Kentucky is 40,409 sq mi (104,659 sq km), of which land makes up 39,669 sq mi (102,743 sq km) and inland water 740 sq mi (1,917 sq km). Kentucky extends about 350 mi (563 km) E-W; its maximum N-S extension is about 175 mi (282 km).
Located in Kentucky, 318-square-mile Rockcastle County accounts for less than one percent of the state's total land area. Of the 120 counties in Kentucky, Rockcastle County ranks 69th in terms of the size of its population (16,942, according to 2015 Census estimates). Recent data from Lands of America calculates the average value of land and acreage for sale in Rockcastle County at $1,300 per acre.