clear
//Given
r=3*10**-3                 //m
m=9*10**9
q1=27*10**-12              //C

//Calculation
R=3*r
C=R/m
V=q1/C

//Result
printf("\n Capacitance of the bigger drop is  %0.3f pico F \npotential of the bigger drop is  %0.3f Volts",C*10**12,V)