print("This program will calculate the area, perimeter and circomfrance of a shape.. lets begin")
keep_going = ""

while keep_going == "":
    
    shape = input("choose a shape from square, circle or rectangle ")
    if shape == "square":
        area_or_perimeter = input("Area or perimeter")
        length = float (input("what is the length of a side "))
        area = length * length
        per = length * 4
        print(f"the area of your square is {area} ")
        print (f"perimiter is {per} ")
    elif shape == "rectangle":
        hight = float (input("how tall is the shape "))
        width = float (input("how wide is the shape "))
        area_r = hight * width
        perimiter = hight + width * 2
        print(f"the area of the rectangle is {area_r} ")
        print(f"the perimiter is {perimiter} ")
    elif shape == circle:
        radius = float (input("what is the diamiter of your circle "))
        import math
        area = math.pi * (radius ** 2)
        circumference = 2 * math.pi * radius
        print(f" the area of this circle is {area} ")
        print(f"the circumfernce is {circumference} ")

    else:
        print("invaled response")
        
        print(" THE PROGRAM HAS ENDED ")