مساحت مثلث

class Math:
    def __init__(self, ghaede,artafa):   
        self.ghaede=ghaede
        self.artafa = artafa

    def Calculation(self):
        return (self.ghaede*self.artafa)/2
        
a = float(input("enter ghaede: "))
b = float(input("enter artafa: "))

obj = Math(a, b)
print(obj.Calculation())