Write a Begineers c$++$ 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$4.$ QuitEnter 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 $=$ r$2$Use $3\mathrm{.}14159$ for a 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 $*$ widthsplay its area. Use the Following formulk For the length of the triangle's base and its height, and thenarea $=$ 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 I through $4$ when selecting an item from the menu. Do not accept negative values for the circle's radius, the rectangle's length or width, or the triangle's base or height.