Could you help me out please

Geometry Calculator Write a program that displays the following a menu. If the user enters 1 the program should ask for the radius of the circle and then display its area. If the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle's area. If the user enters 3 the program should ask for the length of the triangle?s base and its height, and then display its area. If the user enters 4, the program should end. Input Validation: Display an error message if the user enters a number outside the range of