Question

Write a program to calculate the area of the sphere and a cyinder? ( using mathematical functions )

Answer 1

Answer:

import java.util.Scanner;

class area {

   public static void main(String Args[]) {

       Scanner sc = new Scanner(System.in);

       double r1, r2, h;

       // Taking input from the user about radius of the sphere

       System.out.print("Enter radius of the sphere: ");

       r1 = sc.nextDouble();

       // calculating area of the sphere

       double sphere = 4 * Math.PI * Math.pow(r1, 2);

       // displaying the area of the sphere

       System.out.format("Area of the sphere is: %.2f \n", sphere);

       // Taking input from the user about radius and height of the cylinder

       System.out.print("Enter radius of the cylinder: ");

       r2 = sc.nextDouble();

       System.out.print("Enter the height of the cylinder: ");

       h = sc.nextDouble();

       // calculating area of the cylinder

       double cylinder = 2 * Math.PI * r2 * (r2 + h);

       // displaying the area of the cylinder

       System.out.format("Area of the cylinder is: %.2f \n", cylinder);

   }

}

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