#constant
PI = 3.14
r= int(input("Enter the radius of the circle :"))
#Area_circle 
area= PI*r**2

#Diameter_Circle 
diameter=PI*2*r

print("\nthe Circle Diameter:{} cm".format(diameter) )
print("\n the Circle area:{} cm" .format(area))

#Mohamed_Mahmod's
#Mohamed_Mahmod's_task
