Index
General Calculations
Calculates area of an annulus - starting from radii

Input Radius of circle
Input Radius of circle
mm cm m Km mil In Ft Yd Mile
Output area in mm2 cm2 m2r km2 mil2 in2 Sq Ft Sq Yd Sq Mile
Input units name short form :
Input units name long form :

Requested output units short name :
Requested output units long name :

Conversion factor to requested units : 0
Converted area in requested units :

Standard units short name :
Standard units short name :
Conversion factor to standard units from input units : 0
Converted area in standard units :