public class GeomentricObject {

float pi;

GeomentricObject(){

this.pi=3.1415f;

}

public float fvolume(){

System.out.println(“volume is:”+pi);

return pi;

}

}

class Circle extends GeomentricObject{

int radius;

Circle(int radius){

super();

this.radius=radius;

}

public float fvolume(){

float volume;

volume=pi*radius*radius;

System.out.println(“volume of Circle=”+volume);

return volume;

}

}

class Cone extends Circle{

int height;

Cone(int radius,int height){

super(radius);

this.height=height;

}

public float fvolume(){

float volume;

volume=(pi*radius*radius*height)/3;

System.out.println(“volume of Cone is=”+volume);

return volume;

}

}

class Triangle extends GeomentricObject{

int base;

int height;

Triangle(int base,int height){

super();

this.base=base;

this.height=height;

}

public float fvolume(){

float volume;

volume=base*height*1/2;

System.out.println(“volume of Triangle is=”+volume);

return volume;

}

}

class Tribasepyramid extends Triangle{

int base;

int height;

int width;

Tribasepyramid(int base,int height,int width){

super(base,height);

this.width=width;

}

public float fvolume(){

float volume;

volume=width*super.fvolume();

System.out.println(“volume of trianglebasepyramid=”+volume);

return volume;

}

}

class Hexogon extends GeomentricObject{

int side;

Hexogon(int side){

super();

this.side=side;

}

public float fvolume(){

double volume=3*Math.sqrt(3)/2*side*side;

float t=(float)volume;

System.out.println(“volume of Hexogon is=”+volume);

return t;

}

}

class Hexogonbasepyramid extends Hexogon{

int base;

int height;

double area;

double volume;

Hexogonbasepyramid(int side,int base,int height){

super(side);

this.base=base;

this.height=height;

}

public float fvolume(){

area=super.fvolume();

volume=area*base*height;

float tt=(float)volume;

System.out.println(“volume of Hexobasepyramid=”+volume);

return tt;

}

}

allmain.java

import java.util.*;

public class allmain {

static Scanner sc=new Scanner(System.in);

public static void main(String[] args) {

Cone c=new Cone(3,4);

c.fvolume();

Hexogonbasepyramid j=new Hexogonbasepyramid(2,3,4);

j.fvolume();

Tribasepyramid tb=new Tribasepyramid(2,5,22);

tb.fvolume();

GeomentricObject g=new Cone(4,5);

g.fvolume();

}

}

output:

volume of Cone is=37.697998

volume of Hexogon is=10.392304845413264

volume of Hexobasepyramid=124.7076530456543

volume of Triangle is=5.0

volume of trianglebasepyramid=110.0

volume of Cone is=83.77334