#삼각형 만들기
class Triangle:
    base = 0
    height = 0
 
    def set_length(self,a,b):
        a = int(a)
        b = int(b)
        self.base = a 
        self.height = b
 
 
 
    def print_area(self):
        return print(self.base*self.height/2)
 
class RATriangle(Triangle):
    def print_hypotenuse(self):
        return print((self.base**2+self.height**2)**0.5)
 
 
cha = RATriangle()
cha.set_length(5,7)
cha.print_area()
cha.print_hypotenuse()

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