add, subtract, multiply, divide, volume

# Adding more code to add, subtract, multiply, divide two numbers, and calculate the volume of a cylinder
import math

print("Hi, I am Marvin, your personal bot.")
print("You can select one word of the menu, writing the word")
print("add   subtract   multiply   divide   volume")
command = input("How can I help? ")

if command == "add" or command == "plus":   # Adding code to add in lines 9-17
    print("lets add two numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = float(input1)
    number2 = float(input2)
    result = number1 + number2
    output = str(result)
    print(input1 + " + " + input2 + " = " + output)

elif command == "subtract":   # Adding code to subtract in lines 19-27
    print("lets subtract two numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = float(input1)
    number2 = float(input2)
    result = number1 - number2
    output = str(result)
    print(input1 + " - " + input2 + " = " + output)

elif command == "multiply" or command == "multiplication":   # Adding code to multiply in lines 29-37
    print("lets multiply two numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = float(input1)
    number2 = float(input2)
    result = number1 * number2
    output = str(result)
    print(input1 + " * " + input2 + " = " + output)

elif command == "divide" or command == "division":   # Adding code to divide in lines 39-47
    print("lets divide two numbers")
    input1 = input("Number 1> ")
    input2 = input("Number 2> ")
    number1 = float(input1)
    number2 = float(input2)
    result = number1 / number2
    output = str(result)
    print(input1 + " / " + input2 + " = " + output)

elif command == "Volume" or command == "volume":   # Adding code to subtract in lines 49-58
    print("lets calculate volume of cylinder with 2 values, ratio and high in cms.")
    input1 = input("ratio > ")
    input2 = input("high > ")
    ratio = float(input1)
    high = float(input2)
    #pi1 = 3.14
    result = math.pi * ratio * ratio * high
    output = str(result)
    print("volume of cylinder = " + output + " cms^3")

else:
    print("sorry I dont understand")