# Instead of giving the value of pi manually, there's an inbuilt function in a module called math.
import math
r = float(input("Enter the radius of the circle"))
pi = 22/7
# area = pi*r**2
area = math.pi*r**2
print(area)
# Instead of giving the value of pi manually, there's an inbuilt function in a module called math.
import math
r = float(input("Enter the radius of the circle"))
pi = 22/7
# area = pi*r**2
area = math.pi*r**2
print(area)
# Instead of giving the value of pi manually, there's an inbuilt function in a module called math. # area = pi*r**2