Hi, I have another code lab question. Please, make the program easy to understand if possible and please follow requirements. Thank you so much.

4.21: Geometry Calculator Write a program that displays the following menu:

Geometry Calculator 1. Calculate the Area of a Circle 2. Calculate the Area of a Rectangle 3. Calculate the Area of a Triangle 4. Quit Enter your choice (1-4):

If the user enters 1, the program should ask for the radius of the circle and then display its area. Use the following formula: area = (the square of r) Use 3.14159 for and the radius of the circle for r.

If the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangles area. Use the following formula: area = length * width

If the user enters 3, the program should ask for the length of the triangles base and its height, and then display its area. Use the following formula: area = base * height * .5

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 1 through 4 when selecting an item from the menu. Do not accept negative values for the circles radius, the rectangles length or width, or the triangles base or height.

NOTE: If the user enters an improper menu choice (1-4), the program prints "The valid choices are 1 through 4. Run the program again and select one of those." If the user enters a negative radius, the program prints "The radius can not be less than zero." If the user enters a negative value for height or base , the program prints "Only enter positive values for base and height."

SAMPLE RUN #1: ./ETest

Instructor Notes:

Here are all of the output strings necessary to help you with this assignment.

"Geometry Calculator " "1. Calculate the area of a Circle " "2. Calculate the area of a Rectangle " "3. Calculate the area of a Triangle " "4. Quit " "Enter your choice (1-4): " " Enter the circle's radius: " " The radius can not be less than zero. " " The area is " " Enter the rectangle's length: " "Enter the rectangle's width: " " Only enter positive values for " "length and width. " "Enter the length of the base: " "Enter the triangle's height: " " Only enter positive values for base and height. " "Program ending. " "The valid choices are 1 through 4. Run the " "program again and select one of those. "