clear
//Given
e=10**-2                        //V
B=5*10**-5                      //T
r=0.5                          //m
N=1

//Calculation
//
A=%pi*r**2
n=(e*N)/(%pi*r**2*B)

//Result
printf("\n Rate of rotation of the blade is %0.1f  revolutions/second",n)