Create an application, using the following names for the solution and project, respectively: Playground Solution and Playground Project. Save the application in the VB2015\Chap11 folder. The application should display the area of a triangular playground in square feet. It should also display the cost of covering the playground with artificial grass.

a. Create a suitable interface. Provide list boxes for the user to enter the playground’s base and height dimensions in yards. Both list boxes should display numbers from 20 to 50 in increments of 0.5. Also, provide a list box for entering the price per square foot. This list box should display numbers from 1 to 6 in increments of 0.5.

b. Create a class named Triangle. The Triangle class should verify that the base and height dimensions are greater than 0 before assigning the values to the Private variables. (Although the dimensions come from list boxes in this application, the Triangle class might subsequently be used in an application whose dimensions come from text boxes.) The class should also include a default constructor, a parameterized constructor, and a method to calculate the area of a triangle.

c. Code the application and then test it appropriately.