package com.example; import java.util.Scanner; public class AreaFromRadius { public static void main(String args[]){ final double PI = 3.14; System.out.println("Enter the radius : "); //Scanner object built Scanner input = new Scanner(System.in); //Enter the radius from user double radius = input.nextDouble(); //Area of Circle double areaOfCircule = (int)(PI * radius * radius*100)/100.0; //Area of Spare double areaOfSpare = 4 * areaOfCircule; //Area of Half Spare double areaOfHalfSpare = 2 * areaOfCircule; //Volume Of Spare double volumeOfSpare = (4.0/3)*(PI*radius*radius*radius); //Volume Of Half Spare double volumeOfHalfSpare = (0.5)*(int)(volumeOfSpare*100)/100.0; //Display the above data System.out.println("Area of Circle : " + areaOfCircule); System.out.println("Area of Spare : "+ areaOfSpare + "\nVolume of Spare : " + volumeOfSpare); System.out.println("Area of HalfSpare : "+ areaOfHalfSpare + "\nVolume of HalfSpare : " + volumeOfHalfSpare); } }