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Problem Description
根据输入的半径值，计算球的体积。
Input
输入数据有多组，每组占一行，每行包括一个实数，表示球的半径。
Output
输出对应的球的体积，对于每组输入数据，输出一行，计算结果保留三位小数。
Sample Input
1
1.5
Sample Output
4.189
14.137
Hint
define PI 3.1415927
Source
HDOJ
import java.text.DecimalFormat; import java.util.Scanner; public class Main {
public static void main(String[] args) { Scanner str = new Scanner(System.in);
DecimalFormat df =new DecimalFormat("0.000"); double x, y; while(str.hasNext())
{ x = str.nextDouble(); y = (4.0 * (3.1415927) * x * x * x) / 3; System.out
.println(df.format(y)); } str.close(); } }
