# C program to find area and perimeter of the rectangle

Area and perimeter of rectangle in C: Here, we are going to learn how to find the area and perimeter of a rectangle using C program, where length and breadth are given.
Submitted by Manju Tomar, on August 01, 2019

Input length and breadth and calculate the area and perimeter of a rectangle using C program.

Formula to calculate area of a rectangle: length * breadth

Formula to calculate perimeter of a rectangle: 2*length + 2*breadth or 2(length + breadth)

Example:

```    Input:
length: 2.55

Output:
Area: 25.50
Perimeter: 25.10
```

## Area and perimeter of a rectangle in C

```/* 	C program to calculate the area and perimeter
of rectangle
*/

#include <stdio.h>

int main()
{
/*declare the variables*/
float length;
float area;
float perimeter;

/*length input*/
printf("Enter the length: ");
scanf("%f", &length);

/*Calculating the area and rectangle*/
perimeter = (2 * length) + (2 * breadth);

/*printing the result*/
printf("Area of the rectangle: %.02f\n", area);
printf("Perimeter of rectangle: %.02f\n", perimeter);

return 0;
}
```

Output

```First run:
Enter the length: 5
Area of the rectangle: 20.00
Perimeter of rectangle: 18.00

Second run:
Enter the length: 2.55
Area of the rectangle: 25.50
Perimeter of rectangle: 25.10
```