program to display a menu for calculating area of a circle or perimeter of a circle.

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radius=float(input("Enter radius of the circle:"))
print("1.calculate area")
print("2.calculate perimeter")
Choice=int(input("Enter your choice (1or2):"))
if choice == 1:
   area=3.14159*radius*radius
   print("area of circle with radius", radius,'is',area)
    else:
         perm=2*3.14159*radius
         print ("perimeter of circle with radius", radius,'is',perm)


Output
Enter radius of circle : 2.5
        1.calculate area
         2.calculate perimeter
Enter your choice(1or 2):1
area of circle with radius 2.5 is 19.6349375

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