Chapter 9 Practice Set Solution

Author: kishanrajput23

44.Chapter_9_Practice_Set/Ch9PS.pdf

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+class Cylinder {
+    private double height;
+    private double radius;
+    
+    public void setRadius(double r) {
+        this.radius = r;
+    }
+    public double getRadius() {
+        return radius;
+    }
+    
+    public void setHeight(double h) {
+        this.height = h;
+    }
+    public double getHeight() {
+        return height;
+    }
+}
+
+public class cwh_44_ps_pr_01 {
+    public static void main(String args[]) {
+        Cylinder rad = new Cylinder();
+        Cylinder hgt = new Cylinder();
+      
+        rad.setRadius(2.5);
+        hgt.setHeight(5);
+        
+        System.out.println(rad.getRadius());
+        System.out.println(hgt.getHeight());
+    }
+}

44.Chapter_9_Practice_Set/cwh_44_ps_pr_01.java

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+class Cylinder {
+    private double height;
+    private double radius;
+    
+    public void setRadius(double r) {
+        this.radius = r;
+    }
+    public double getRadius() {
+        return radius;
+    }
+    
+    public void setHeight(double h) {
+        this.height = h;
+    }
+    public double getHeight() {
+        return height;
+    }
+    
+    public double surfaceArea() {
+        return (2* Math.PI * radius * radius) + (2*Math.PI * radius * height);
+    }
+    public double volume(){
+        return Math.PI * radius * radius * height;
+    }
+}
+
+public class cwh_44_ps_pr_02 {
+    public static void main(String args[]) {
+        Cylinder mycylinder = new Cylinder();
+      
+        mycylinder.setRadius(2.5);
+        mycylinder.setHeight(5);
+        
+        System.out.println(mycylinder.getRadius());
+        System.out.println(mycylinder.getHeight());
+        
+        System.out.println(mycylinder.surfaceArea());
+        System.out.println(mycylinder.volume());
+    }
+}

44.Chapter_9_Practice_Set/cwh_44_ps_pr_02.java

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+class Cylinder {
+    private double height;
+    private double radius;
+    
+    public Cylinder(double radius, double height) {
+        this.radius = radius;
+        this.height = height;
+    }
+    
+    public double surfaceArea() {
+        return (2* Math.PI * radius * radius) + (2*Math.PI * radius * height);
+    }
+    public double volume(){
+        return Math.PI * radius * radius * height;
+    }
+}
+
+public class cwh_44_ps_pr_03 {
+    public static void main(String args[]) {
+        Cylinder mycylinder = new Cylinder(5, 9.8);
+        System.out.println(mycylinder.surfaceArea());
+        System.out.println(mycylinder.volume());
+    }
+}

44.Chapter_9_Practice_Set/cwh_44_ps_pr_03.java

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+class Rectangle {
+    private int length;
+    private int breadth;
+    
+    public Rectangle() {
+        length = 5;
+        breadth = 5;
+    }
+    
+    public Rectangle(int length, int breadth) {
+        this.length = length;
+        this.breadth = breadth;
+    }
+    
+    public int getLength() {
+        return length;
+    }
+    
+    public int getBreadth() {
+        return breadth;
+    }
+}
+
+public class cwh_44_ps_pr_04 {
+    public static void main(String args[]) {
+        Rectangle rect = new Rectangle(80, 40);
+        System.out.println(rect.getLength());
+        System.out.println(rect.getBreadth());
+    }
+}

44.Chapter_9_Practice_Set/cwh_44_ps_pr_04.java

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+class Sphere {
+    private double radius;
+    
+    public void setRadius(double radius) {
+        this.radius = radius;
+    }
+    public double getRadius() {
+        return radius;
+    }
+    public double volume() {
+        return (4 * Math.PI * radius * radius * radius) / 3;
+    }
+}
+
+public class cwh_44_ps_pr_05 {
+    public static void main(String args[]) {
+        Sphere rad = new Sphere();
+      
+        rad.setRadius(2.5);
+        
+        System.out.println(rad.getRadius());
+        System.out.println(rad.volume());
+    }
+}