Question

Write a program using a method called area() to compute area of the following: 

1. Area of circle = `22/7 "*""r""*""r"`
2. Area of square = side * side
3. Area of rectangle = length * breadth 

Display the menu to display the area as per the user's choice.

Answer 1

import java.util.*;
class FQ6{ 
static void Area(float r) // Method to find the area of a circle
{ double tmp, pi = 3.14;
tmp = pi * r * r; :
System.out.println("Area = " + tmp);
}

static void Area(double s) // Method to find the area of a square
{ System.out.println("Area = " + s * s);
} 

static void Area(float 1, float b) // Method to find the area of a rectangle
{ System.out.println("Area = " + 1 * b);
} 

public static void main(String jk[])
{ Scanner ob = new Scanner(System.in);
float r;
System.out.println("\nEnter the radius of the circle");
r = ob.nextFloat(); // METHOD CALL
Area(r);
System.out.println("\nEnter the side of the Square"); 
Area(ob.nextDouble()); // METHOD CALL
System.out.println("\nEnter the length and breadth");
Area(ob.nextFloat(),ob.nextFloat()); // METHOD CALL
}}