import math

class StringToNumber:
    def convert(self, string):
        if string == "one":
            return 1
        elif string == "two":
            return 2
        elif string == "three":
            return 3
        elif string == "four":
            return 4
        elif string == "five":
            return 5
        elif string == "six":
            return 6
        elif string == "seven":
            return 7
        elif string == "eight":
            return 8
        elif string == "nine":
            return 9
        else:
            return string
			
def main():
    #Circles have one value: radius
    circle1 = Shape(2)
    circle2 = Shape("three")
    
    #Rectangles have two values: width and height
    rectangle1 = Shape(5, 3)
    rectangle2 = Shape("seven", "two")
    
    #Triangles have three values: the lengths of each side of the triangle
    triangle1 = Shape("four", "six", "nine")
    triangle2 = Shape(3, 6, 5)
    
    #You can assume that shapes are either given only integer values, or only strings with one of the following values:
    #"one", "two", "three", "four", "five", "six", "seven", "eight", "nine"
    
    #The perimeter of a circle is: 2 x pi x radius 
    #The area of a circle is: pi x radius^2
    #You can use 'math.pi' as the value of pi
    #You can use 'value**2' to square a value
    
    circle1.perimeter() #Should print "This circle has a perimeter of 12.5663706..."
    circle1.area() #Should print "This circle has an area of 12.5663706..."
    
    circle2.perimeter() #Should print "This circle has a perimeter of 18.84955592..."
    circle2.area() #Should print "This circle has an area of 28.27433388..."
    
    #The perimeter of a rectangle is: 2 x (width + height) 
    #The area of a rectangle is: width x height
    
    rectangle1.perimeter() #Should print "This rectangle has a perimeter of 16"
    rectangle1.area() #Should print "This rectangle has an area of 15"
    
    rectangle2.perimeter() #Should print "This rectangle has a perimeter of 18"
    rectangle2.area() #Should print "This rectangle has an area of 14"
    
    #The perimeter of a triangle with sides of length a, b and c is: a + b + c 
    #The area of a triangle with sides of length a, b and c and perimeter p is the square root of: 
	#p/2 x (p/2-a) x (p/2-b) x (p/2-c)
    #You can use 'math.sqrt(value)' to get the square root of a value
    
    triangle1.perimeter() #Should print "This triangle has a perimeter of 19"
    triangle1.area() #Should print "This triangle has an area of 9.5622957..."
    
    triangle2.perimeter() #Should print "This triangle has a perimeter of 14"
    triangle2.area() #Should print "This triangle has an area of 7.48331477..."
    
    input()
    
if __name__ == '__main__':
    main()