Round #638

What is the perimeter of a triangle with sides 5, 7, and 10?

To calculate the perimeter of a triangle, you simply add up the lengths of all its sides. For a triangle with sides measuring 5 units, 7 units, and 10 units, the perimeter can be calculated as follows: \[ \text{Perimeter} = 5 + 7 + 10 = 22 \] So, the perimeter of the triangle is 22 units.

To calculate the perimeter of a triangle given its side lengths, you simply need to sum up the lengths of all three sides. Here's how you can implement this in C#: ```csharp using System; public class TriangleCalculator { public static double CalculatePerimeter(double side1, double side2, double side3) { // Validate that the sides form a valid triangle if (side1 + side2 <= side3 || side1 + side3 <= side2 || side2 + side3 <= side1) { throw new ArgumentException("The given sides do not form a valid triangle."); } return side1 + side2 + side3; } } public class Program { public static void Main() { try { double side1 = 5.0; double side2 = 7.0; double side3 = 10.0; double perimeter = TriangleCalculator.CalculatePerimeter(side1, side2, side3); Console.WriteLine($"The perimeter of the triangle is: {perimeter}"); } catch (ArgumentException ex) { Console.WriteLine(ex.Message); } } } ``` ### Explanation: 1. **TriangleCalculator Class**: - The `CalculatePerimeter` method takes three double parameters representing the sides of a triangle. - It first checks if the given sides can form a valid triangle using the triangle inequality theorem. If not, it throws an `ArgumentException`. - If the sides are valid, it calculates and returns the perimeter by summing up the side lengths. 2. **Program Class**: - The `Main` method demonstrates how to use the `TriangleCalculator` class. - It sets the side lengths of the triangle (5, 7, and 10). - It calls the `CalculatePerimeter` method and prints the result. - It also includes basic error handling to catch and display any exceptions that might occur. This implementation is straightforward and follows best practices for C# programming, including proper validation and exception handling.