Java/com/study/demo/test2_2.java

package com.study.demo;

import java.util.Scanner;

public class test5 {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int c = scanner.nextInt();
    double pi = 3.1415926535;
    double area = a * b * c + a * c + (pi * c * c) / 4;
    System.out.printf("%.3f\n", area / 10000);
  }
}