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**Find the area of triangle and area of rectangle in java**

To write a java program to create a superclass called Figure that receives the dimensions of two-dimensional objects. It also defines a method called area that computes the area of an object. The program derives two subclasses from Figure. The first is Rectangle and the second is Triangle. Each of the sub-class overridden area() so that it returns the area of a rectangle and a triangle respectively.

### Description :

create a superclass called Figure that receives the dimensions of two-dimensional objects. It also defines a method called area that computes the area of a triangle of an object. The program derives two subclasses from Figure. The first is Rectangle and the second is Triangle. Each of the sub-class overridden area() so that it returns the area of a **triangle** and a rectangle respectively.

### Java Program to Calculate Area of Triangle Source Code

import java.io. *; class Figure { int l, w; Figure(int a, int b) { l = a; w = b; } void area() { System.out.println("Area of the Figure"); } } class Triangle extends Figure { Triangle(int g, int h) { super(g, h); } void area() { System.out.println("Area of triangle " + (l * w) / 2); } } class A { public static void main(String ar[]) { Rectangle obj1 = new Rectangle(20, 20); obj1.area(); } }

#### Output: Area of Triangle

### Java Program to Calculate Area of Rectangle Source Code

import java.io.*;

class Figure

{

int l, w;

Figure(int a, int b)

{

l = a;

w = b;

}

void area()

{

System.out.println("Area of the Figure");

}

}

class Rectangle extends Figure

{

Rectangle(int k,int l)

{

super(k,l);

}

void area()

{

System.out.println("Area of rectangle is "+l*w);

}

}

class A

{

public static void main(String ar[])

{

Triangle obj2 = new Triangle(20, 20);

obj2.area();

}

}

#### Output: Area of Rectangle

**FAQ:**

### How do you find the area of a rectangle in Java?

To find the area of a rectangle, we have to know the formula to find the area of a rectangle and that is **Area = ( l * w ), **where **L** is the **lengt**h and **w** is the **width.**

### How do you find the area of a triangle in Java?

To find the area of a triangle, we have to know the formula to find the area of a triangle and that is **Area = ( b * h ) / 2**, Where **b** is the **base** and **h** is the **height**.

### What is the formula for area of a Triangle?

The formula for the area of a triangle is: **Area = ( b * h ) / 2**, Where **b** is the **base** and **h** is the **height**.

### What is the formula for area of a Rectangle?

The formula for the area of a rectangle is: **Area = ( l * w ), **where **L** is the **lengt**h and **w** is the **width.**

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