100 Sq Km = 38.61 Sq Mile

100 Square Kilometers = 38.61  Square Mile

100 Square Mile = 258.999 Square Kilometers

1 Square Kilometers = 100 Hectare =  247.105 Acre

1 Square Mile = 258.999 Hectare = 640 Acre

1 Acre = 0.405 Hectare = 43560 Square Feet

1 Hectare = 107639 Square Feet 

Vatican City is only 44 Hectare i.e 4736116 Square Feet

Monaco is only 200 Hectare i.e 21527800 Square Feet

Common Conversion

Nautical mile

1 Nautical mile =  1.852 Kilometers

Temperature

1 Celsius =  32 Fahrenheit

 A temperature difference of 1 deg C is the equivalent of a temperature difference 1.8°F

ºF = ºC * 1.8 + 32.

 

212 Fahrenheit = 100 Celsius

A temperature difference of 1°F is the equivalent of a temperature difference 0.556°C.

 

Most people think of a "normal" body temperature as an oral temperature of 98.6°F (37°C).