圆的面积

圆的面积

Time Limit: 1000MS Memory Limit: 32768KB

Submit Statistic

Problem Description

    Give you the radius of a circle，caculate its area，PI=3.141592653。

Input

The first line of the input is a positive integer N,then follows N lines,each line is a real number represent the radius of the circle. 

Output

Output contains N lines,for each line of the input you should output one line, Case K: S,and K(count from 1)represents the number of the circle and S is the area.Keep two digits after the decimal point.

Example Input

3123

Example Output

Case 1: 3.14Case 2: 12.57Case 3: 28.27

Hint

Author

import java.util.Scanner;public class Main {public static void main(String[] args) {// TODO Auto-generated method stubScanner sc = new Scanner(System.in);while (sc.hasNext()) {int n = sc.nextInt();for (int i = 1; i <= n; i++) {int a = sc.nextInt();Circle circle = new Circle(a);double s = circle.Area();System.out.printf("Case %d: %.2f\n", i, s);}}sc.close();}}class Circle {int a;public Circle(int a) {this.a = a;}public double Area() {return a * a * Math.PI;}}