Area calculation (circle, rectangle, triangle, etc.)
Create a website to allow calculation of areas. A radio button list can be used to allow the user select what type of area to be calculated. Once the selection is done, the input text boxes should be displayed with the proper labels. For example, if Circle is selected, only one text box should be used for the input of the radius value. In case Rectangle is selected, two input boxes labeled Width and Height should be displayed (hint: controls can be created but made invisible by setting the Visible property to False at design time using the Properties Window or at run time using code). When the user finishes the input and clicks the button, the result should be displayed using a label control.