A menu card to choose to find the area of the desired shape in cm.

def square(l):
    area=(l*l)
    return area
def rectangle(l,b):
    area=l*b
    return area
def triangle(b,h):
    area=(1/2*b*h)
    return area
def circle(r):
    area=(3.14*r*r)
    return area
print("Select the shape from the menu to get its area ")
print("1.Square")
print("2.Rectangle")
print("3.Triangle")
print("4.Circle")
choice=int(input("Enter the choice1/2/3/4 : "))
if choice==1:
    l=int(input("Enter a value for the lenght of the square:"))
    print("Area of the square is =",square(l),"cm sq")
elif choice==2:
    l=float(input("Enter a value for the lenght of the rectangle:"))
    b=float(input("Enter a value for the breadth of the rectangle:"))
    print("Area of the rectangle is =",rectangle(l,b),"cm sq")
elif choice==3:
   b=float(input("Enter a value for the breadth of the triangle : "))
   h=float(input("Enter a value for the height of the triangle : "))
   print("Area of the traingle is =",triang\le(b,h),"cm sq")
elif choice==4:
    r=float(input("Enter a value for the radius of the circle : "))
    print("Area of the circle is =",circle(r),"cm sq")
else:
    print("Invalid Input")