1. Calculate the Area of Circle
import java.util.Scanner;
class AreaOfCircle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the radius:");
double r= s.nextDouble();
double area=(22*r*r)/7 ;
System.out.println("Area of Circle is: " + area);
}
}
Output :-
Enter the radius:
25
Area of Circle is: 1964.2857142857142
2. Calculate the Area of Triangle
import java.util.Scanner;
class AreaOfTriangle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the width of the Triangle:");
double b= s.nextDouble();
System.out.println("Enter the height of the Triangle:");
double h= s.nextDouble();
//Area = (width*height)/2
double area=(b*h)/2;
System.out.println("Area of Triangle is: " + area);
}
}
Output :-
Enter the width of the Triangle:25
Enter the height of the Triangle:
25
Area of Triangle is: 312.5
3. Calculate the Area of Rectangle
import java.util.Scanner;
class AreaOfRectangle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the length:");
double l= s.nextDouble();
System.out.println("Enter the breadth:");
double b= s.nextDouble();
double area=l*b;
System.out.println("Area of Rectangle is: " + area);
}
}
Output :-
Enter the length:
30
Enter the breadth:
20
Area of Rectangle is: 600.0
4. Calculate the Area of Isosceles Triangle
import java.util.Scanner;
class AreaOfIsoscelesTriangle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the length of same sided :");
double a= s.nextDouble();
System.out.println("Enter the side2 of the Triangle :");
double b= s.nextDouble();
double area=(b/4)*Math.sqrt((4*a*a)-(b*b));
System.out.println("Area of Isosceles Triangle is: " + area);
}
}
Output :-
Enter the length of same sided :25
Enter the side2 of the Triangle :
20
Area of Isosceles Triangle is: 229.128784747792
5. Calculate the Area of Equilateral Triangle
import java.util.Scanner;
class AreaOfEquilateralTriangle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the side of the Triangle:");
double a= s.nextDouble();
double area=(Math.sqrt(3)/4)*(a*a);
System.out.println("Area of Triangle is: " + area);
}
}
Output :-
Enter the side of the Triangle:
25
Area of Triangle is: 270.6329386826371
6. Calculate the Area of Rhombus
import java.util.Scanner;
class AreaOfRhombus
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the diagonal 1:");
double d1= s.nextDouble();
System.out.println("Enter the diagonal 2:");
double d2= s.nextDouble();
double area=(d1*d2)/2;
System.out.println("Area of Rhombus is: " + area);
}
}
Output :-
Enter the diagonal 1:
25
Enter the diagonal 2:
30
Area of Rhombus is: 375.0
7. Perimeter of the Circle
import java.util.Scanner;
class PerimeterOfCircle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the radius:");
double r= s.nextDouble();
double c=(22*2*r)/7 ;
System.out.println("Perimeter of Circle is: " +c);
}
}
Output :-
Enter the radius:25
Perimeter of Circle is: 157.14285714285714
8. Perimeter of the Square
import java.util.Scanner;
class PerimeterOfSquare
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the side of the square:");
double a= s.nextDouble();
double perimeter=4*a;
System.out.println("perimeter of Square is: " + perimeter);
}
}
Output :-
Enter the side of the square : 25
perimeter of Square is: 100
9. Perimeter of the Rectangle
import java.util.Scanner;
class PerimeterOfRectangle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the length of the Rectangle:");
double l= s.nextDouble();
System.out.println("Enter the width of the Rectangle:");
double b= s.nextDouble();
double perimeter=2*(l+b);
System.out.println("perimeter of Rectangle is: " + perimeter);
}
}
Output :-
Enter the length of the Rectangle:25
Enter the width of the Rectangle:30
perimeter of Rectangle is: 110.0
10. Perimeter of the Equilateral Triangle
import java.util.Scanner;
class PerimeterOfEquilateralTriangle
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the side of the Triangle:");
double a= s.nextDouble();
double perimeter=3*a;
System.out.println("perimeter of Triangle is: " + perimeter);
}
}
Output :-
Enter the side of the Triangle:25
perimeter of Triangle is: 75.0
11. Volume of Sphere
import java.util.Scanner;
class VolumeOfSphere
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the radius of sphere:");
double r=s.nextDouble();
double volume= (4*22*r*r*r)/(3*7);
System.out.println("Volume is:" +volume);
}
}
Output :-
Enter the radius of sphere:
25
Volume is:65476.19047619047
12. Volume of Prism
import java.util.Scanner;
class VolumeOfPrism
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the area of base:");
double base=s.nextDouble();
System.out.println("Enter the height:");
double height=s.nextDouble();
double area=base*height ;
System.out.println("Volume Of Prism is: " + area);
}
}
Output :-
Enter the area of base:
25
Enter the height:
25
Volume Of Prism is: 625.0
13. Volume of Cylinder
import java.util.Scanner;
class VolumeOfCylinder
{
public static void main(String args[])
{
Scanner s= new Scanner(System.in);
System.out.println("Enter the radius:");
double r=s.nextDouble();
System.out.println("Enter the height:");
double h=s.nextDouble();
double volume=((22*r*r*h)/7);
System.out.println("volume of Cylinder is: " +volume);
}
}
Output :-
Enter the radius:
25
Enter the height:
25
volume of Cylinder is: 49107.142857142855
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