Write a C# program that inputs the radius of a circle and outputs its area. Allow the user to repeat the calculations as often as desired. Use Math.PI for the value of pi. The area of a circle is pi times the square of the radius
Quiz 2
Write a C# program to make change. Enter the cost of an item that is less than one dollar. Output the coins given as change, using quarters, dimes, nickels, and pennies. Use the fewest coins possible. For example, if the item cost 17 cents, the change would be three quarters, one nickel, and three pennies.