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- import java.util.Scanner;
- public class CircleAreaAndPerimeter_08 {
- public static void main(String[] args) {
- Scanner scanner = new Scanner(System.in);
- // създаваме си променливата
- // лицето и периметъра на кръг
- double r = Double.parseDouble(scanner.nextLine());
- double calculatedAerea = Math.PI * ( r * r);
- double calculatedParameter = Math.PI * ( r + r );
- System.out.printf( " %.2f ",calculatedAerea );
- System.out.println();
- System.out.printf( " %.2f ", calculatedParameter);
- }
- }
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