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- using System;
- namespace _11._Geometry_Calculator
- {
- class GeometryCalculator
- {
- static void Main(string[] args)
- {
- string type = Console.ReadLine();
- if (type == "triangle")
- {
- FindAreaTriangle();
- }
- else if (type == "square")
- {
- FindAreaSquare();
- }
- else if (type == "rectangle")
- {
- FindAreaRectangle();
- }
- else if (type == "circle")
- {
- FindAreaCircle();
- }
- }
- private static void FindAreaCircle()
- {
- double radius = double.Parse(Console.ReadLine());
- double area = Math.PI * radius * radius;
- Console.WriteLine($"{area:f2}");
- return;
- }
- private static void FindAreaRectangle()
- {
- double width = double.Parse(Console.ReadLine());
- double height = double.Parse(Console.ReadLine());
- double area = width * height;
- Console.WriteLine($"{area:f2}");
- return;
- }
- private static void FindAreaSquare()
- {
- double side = double.Parse(Console.ReadLine());
- double area = side * side;
- Console.WriteLine($"{area:f2}");
- return;
- }
- private static void FindAreaTriangle()
- {
- double side = double.Parse(Console.ReadLine());
- double height = double.Parse(Console.ReadLine());
- double area = side * height / 2;
- Console.WriteLine($"{area:f2}");
- return;
- }
- }
- }
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