Code 2

import java.lang.Math; 
	public class Test2 {
		// TODO Auto-generated method stub
		public static void main(String args[]){
double a = 20.61;
double b = 20.82;

System.out.println (Math.sqrt(a));
System.out.println (Math.ceil(a));
System.out.println (Math.round(a));
System.out.println (Math.floor(a));
System.out.println (Math.max(a,b));

	}


}

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