Round #632

Calculate the area of a rectangle with width 8 and length 13.

To calculate the area of a rectangle, you can use the formula: \[ \text{Area} = \text{width} \times \text{length} \] Given: - Width = 8 - Length = 13 Let's compute this using C#. ```csharp using System; class Program { static void Main() { // Define the width and length of the rectangle double width = 8; double length = 13; // Calculate the area of the rectangle double area = width * length; // Output the result Console.WriteLine("The area of the rectangle is: " + area); } } ``` When you run this program, it will output: ``` The area of the rectangle is: 104 ```

```csharp using System; class Program { static void Main() { try { double width = 8; double length = 13; double area = CalculateRectangleArea(width, length); Console.WriteLine($"The area of the rectangle is: {area}"); } catch (Exception ex) { Console.WriteLine($"An error occurred: {ex.Message}"); } } static double CalculateRectangleArea(double width, double length) { if (width <= 0 || length <= 0) { throw new ArgumentException("Width and length must be positive numbers."); } return width * length; } } ``` ### Explanation: 1. **Main Method**: The `Main` method is the entry point of the program. It initializes the width and length of the rectangle, calls the `CalculateRectangleArea` method to compute the area, and prints the result. It also includes basic error handling using a try-catch block. 2. **CalculateRectangleArea Method**: This method takes two parameters, `width` and `length`, and returns their product as the area of the rectangle. It includes validation to ensure that both width and length are positive numbers. If either value is non-positive, it throws an `ArgumentException`. This implementation follows best practices by: - Using clear and descriptive variable names. - Including error handling to manage potential issues with input values. - Keeping the code concise and idiomatic.