# Radius is given in the question
radius = 30
# calculating the area of circle
_area_of_circle_ = 3.14*radius**2
# Calculating the circumference of circle
_circum_of_circle_ = 2*3.14*radius
# Taking radius as user input and calculate the area.
radius = int(input("Enter the radius of the circle: "))
print("The area of circle is :" +str(_area_of_circle_))

