import math
def Square():
    sqlength = int(input("What is the length of the square?: "))
    sqarea = str(round(sqlength*sqlength))
    print("The area of the square is", sqarea)

def Rectangle():
    rectlength = int(input("What is the length of the rectangle?: "))
    rectwidth = int(input("What is the width of the rectangle?: "))
    rectarea = str(round(rectlength*rectwidth))
    print("The area of the rectangle is", rectarea)

def Circle():
    circleradius = int(input("What is the radius of the circle?: "))
    circlearea = str(round(math.pi*circleradius** 2))
    print("The area of the circle is", circlearea)

def Prism():
    prismlength = int(input("What is the length of the rectangular prism?: "))
    prismwidth = int(input("What is the width of the rectangular prism?: "))
    prismheight = int(input("What is the height of the rectangular prism?: "))
    prismvolume = str(round(prismwidth*prismheight*prismlength))
    print("The volume of the rectangular prism is", prismvolume)

def Cylinder():
    cylradius = int(input("What is the radius of the cylinder?: "))
    cylheight = int(input("What is the height of the cylinder?: "))
    cylsurfacearea = str(round(2*math.pi*cylradius*cylheight+2*math.pi*cylradius**2))
    print("The surface area of the cylinder is", cylsurfacearea)

def Menu():
    print("1. Find the area of a square\n2. Find the area of a rectangle\n3. Find the area of a circle\n4. Find the volume of a rectangular prism\n5. Find the surface area of a cylinder\n6. Return to the Previous Menu")
    lastmenu = int(input("What would you like to do? Type in the number next to the menu option: "))
    if lastmenu == 1:
        Square()
    if lastmenu == 2:
        Rectangle()
    if lastmenu == 3:
        Circle()
    if lastmenu == 4:
        Prism()
    if lastmenu == 5:
        Cylinder()
    else:
        Main()

def Main():
    print("1. Use the Handy Toolkit\n2. View Instructions\n3. Exit Program")
    firstmenu = int(input("What would you like to do? Type in the number next to the menu option: "))
    if firstmenu == 1:
        Menu()
    if firstmenu == 2:
        print("You must only enter the numbers 1 to 6 and don't include units")
        Main()

Main()