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- import java.util.Scanner;
- class Main {
- public static void main(String[] args) {
- Scanner scanner = new Scanner(System.in);
- String figure = scanner.nextLine();
- double area =0;
- if(figure.equals(square)){
- double side = Double.parseDouble(scanner.nextline);
- area = side * side;
- System.out.printf("%.3f", area);
- } else if(fugure.equals(rectangle)) {
- double sideA = Double.parseDouble(scanner.nextline);
- double sideB = Double.parseDouble(scanner.nextline);
- area = sideA * sideB;
- System.out.printf("%.3f", area);
- } else if(figure.equals(circle)) {
- double radius = Double.parseDouble(scanner.nextline);
- area = raduis * radius * Math.PI;
- System.out.printf("%.3f", area);
- } else if(figure.equals(triangle)) {
- double side = Double.parseDouble(scanner.nextline);
- double height = Double.parseDouble(scanner.nextline);
- area = side * height / 2;
- System.out.printf("%.3f", area);
- }
- }
- }
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