Question

Write a program in java to accept the side of an equilateral triangle and calculate its area

Answer 1

import java.util.*;

public class Area

public static void main(String args[])

{

Scanner in = new Scanner(System.in);

int s,a;

System.out.println("Enter the side")

s=in.nextInt();

a= Math.sqrt(3*s*s/4);

System.out.println("The area is"+a);

}

}

Answer 2

import java.util.Scanner;

class AreaOfEquilateralTriangle

{

public static void main(String args[])

{

Scanner s= new Scanner(System.in);

System.out.println("Enter the side of the Triangle:");

double a= s.nextDouble();

double area=(Math.sqrt(3)/4)*(a*a);

System.out.println("Area of Triangle is: " + area);

}

}

Output :

1

2

3

Enter the side of the Triangle:

5

Area of Triangle is:10.82