6. Write complete C++ a program this page). that displays the following menu (you can use the back of t 1. Calculate the Area of a Circle 2. Calculate the Area of a Rectangle 3. Calculate the Circumference of a circle 4. Calculate the perimeter of a rectangle 5. Quit Enter your choice (1-5): 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 r 2 (use 3.14 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 rectangle's area. Use the following formula: area = length * width .If the user enters 3, the program should ask for the radius of the circle and then display its circumference. Use the following formula: 2**r (use 3.14 for and the radius of the circle for r) circumference .If the user enters 4, the program should ask for the length and width of the rectangle and then display the rectangle's perimeter. Use the following formula: perimeter = 2*(length + width) .If the user enters 5, the program should end