--> //initializations

--> C=125 // (Assume value of constant)
 C  = 

   125.


--> D=0.2 //mm (effective diameter)
 D  = 

   0.2


--> //calculations

--> d=D/10 //cm (effective diameter in cm)
 d  = 

   0.02


--> k=C*(d^2) //(coefficient of permeability)
 k  = 

   0.05


--> //results

--> printf('coefficient of permeability of asoil=%f',k) //cm/sec
coefficient of permeability of asoil=0.050000
