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double sqrt(double d)

public class Test{ 
    public static void main(String args[]){
        double x = 11.635;
        double y = 2.76;

        System.out.printf("The value of e is %.4f%n", Math.E);
        System.out.printf("sqrt(%.3f) is %.3f%n", x, Math.sqrt(x));
    }
}

The value of e is 2.7183
sqrt(11.635) is 3.411