1import java.util.Scanner;
2public class AreaOfEquilateral
3{
4 public static void main(String[] args)
5 {
6 Scanner sc = new Scanner(System.in);
7 System.out.println("Please enter the side of equilateral triangle: ");
8 double side = sc.nextDouble();
9 double area = (Math.sqrt(3)/4) * (side * side);
10 System.out.println("Area of equilateral triangle is: " + area);
11 sc.close();
12 }
13}
1import java.util.Scanner;
2
3public class Main {
4
5 public static void main(String[] args) {
6
7 // area of equilateral triangle
8
9 Scanner scanner = new Scanner(System.in);
10
11 System.out.print("Enter the equal length: ");
12 float equalLength = scanner.nextFloat();
13
14 double area = (Math.sqrt(3) / 4) * Math.pow(equalLength,2);
15
16 System.out.printf("The area is %.2f",area);
17 }
18}