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  1. //package testjava;
  2.  
  3. import java.util.Scanner;
  4.  
  5. public class Main {
  6.     public static void main(String[] args) {
  7. 		Scanner input = new Scanner(System.in);
  8. 		System.out.println("Nhap vao canh a: ");
  9. 		int a = input.nextInt();
  10. 		System.out.println("Nhap vao canh b: ");
  11. 		int b = input.nextInt();
  12. 		System.out.println("Nhap vao canh c: ");
  13. 		int c = input.nextInt();
  14. 		float p = (a + b + c) / 2;
  15. 		if (((a + b) > c) && ((b + c) > a) && ((a + c) > b)) {
  16. 			System.out.println("Dien tich tam giac la:"
  17. 					+ (Math.sqrt(p * (p - a) * (p - b) * (p - c))));
  18. 		} else
  19. 			System.out.println("Khong phai la tam giac");
  20. 	}
  21. }
  22.  
Success #stdin #stdout 0.1s 380608KB
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3 4 5
stdout
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Nhap vao canh a: 
Nhap vao canh b: 
Nhap vao canh c: 
Dien tich tam giac la:6.0
https://ideone.com/YSiBr3
Dien tich tam giac
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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