Calculate the Circle and Rectangle for Shapes in Java

The length & breadth of a rectangle and radius of a circle are input through the keyboard. Write a program to calculate the area & perimeter of the rectangle, and the area & circumference of the circle.

The program starts by importing the java.util.Scanner package, which allows the user to input data into the program.
Then, it declares four variables of float data type - len (length of rectangle), bre (breadth of rectangle), rad (radius of circle), and area_rect, per_rect, area_cir, circum_cir (areas and perimeters of rectangle and circle).
The program then prompts the user to enter the len, bre, and rad values by displaying the message "Enter the Length , Circle and Radius :". It takes the input using the Scanner object and stores it in their respective variables.
Next, the program calculates the area_rect and per_rect of the rectangle using the formulas len*bre and 2*(len+bre) respectively.
The program then calculates the area_cir and circum_cir of the circle using the formulas 3.14f*rad*rad and 2*3.14f*rad respectively.
Finally, the program displays the area_rect, per_rect, area_cir, and circum_cir using the System.out.println() method.

Overall, this program is a basic example of how Java can be used to perform simple mathematical operations and input/output operations, specifically for calculating the areas and perimeters of rectangles and circles.

Source Code

import java.util.Scanner;
class Calculate_Rectangle_Circle
{
	public static void main(String args[])
	{
		Scanner input = new Scanner(System.in);
		System.out.println("Enter the Length , Circle and Radius :");
		float len = input.nextInt();
		float bre = input.nextInt();
		float rad = input.nextInt();
		float area_rect = (len*bre);
		float per_rect = (2*(len+bre));
		float area_cir = (3.14f*rad*rad);
		float circum_cir = (2*3.14f*rad);
		System.out.println("Area of Rectangle : "+area_rect);
		System.out.println("Perimeter of Rectangle : "+per_rect);
		System.out.println("Area of Circule : "+area_cir);
		System.out.println("Circum of a Circule : "+circum_cir);
	}
}

Output

Enter the Length , Circle and Radius :
12
34
9
Area of Rectangle : 408.0
Perimeter of Rectangle : 92.0
Area of Circule : 254.34
Circum of a Circule : 56.52

Calculate the Circle and Rectangle for Shapes in Java

Source Code

Output

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