Answer to Question #160557 in Java | JSP | JSF for nija

Question

IN FORM OF JAVA OPERATION:

CREATE A PROGRAM THAT WOULD:

 Create a program solution of the given problem using Java Programming.

 Use basic system input/output of Java Programming

 Apply java arithmetic

Instruction:

Read and analyze each problem. Provide a JAVA program to satisfy the required

machine functionality.

Import all java utilities using the syntax: Import java.util.*;

Machine Problem:

You have 8 circles of equal size and you want to pack them inside a square. You want

to minimize the size of the square. The following figure illustrates the minimum way of

packing 8 circles inside a square:

Given the radius, r, find the area of the minimum square into which 8 circles of that

radius can be packed.

INPUT: A positive real number (between 0.001 and 1000, inclusivein a single line denoting the radius, r.

OUTPUT: For each test case, output the area of the minimum squarewhere 8 circles of radius r can be packed. Print 5 digits after the decimal.

Your output is considered correct if it is within ±0.00001 of the correct output.

TEST CASE #1

INPUT: 0.1

OUTPUT: 0.34383

Answer 1

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Scanner;

public class SquareSize {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        double a;
        double b;
        System.out.println("Please enter value of radius of the circle:");
        Scanner sc=new Scanner(System.in);
        a=sc.nextFloat();
        b=(2*Math.sqrt(2)+2*Math.sqrt(3)+2)*a/Math.sqrt(2);
        b=b*b;
        NumberFormat formatter = new DecimalFormat("##.00000");
        System.out.println("The required area of the rectangle is:"+formatter.format(b));

    }

}