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**Area of Rectangle Program in C# with Examples**

In this article, I am going to discuss **how to calculate the Area of a Rectangle in C#** with Examples. So, here, first, we will discuss what is Rectangle, then we will discuss how to calculate the area of a rectangle and finally, we will see how to implement this program in C#.

**What is a Rectangle?**

A rectangle is a 2-Dimensional shape in geometry, having 4 sides and 4 corners. Its two sides meet at right angles. Thus, a rectangle has 4 angles, each interior angle is 90 ̊. The opposite sides of a rectangle have the same lengths and are parallel.

**How to Calculate the Area of a Rectangle in C#?**

**Area of rectangle = length * breadth** Or

**A=L * B**

Where A is the area of the rectangle

L is the length of the rectangle

B is the breadth of the rectangle

For Example: Let say: L i.e. Length =20 and B i.e. Breadth=5

Then the area of the Rectangle is 100

**Explanation**: Area of rectangle is the multiply of length (L) and breadth (B)

L=20, B = 5 So, L * B = 20 * 5 = 100

**Logic to Calculate the Area of Rectangle in C# **

For finding the area of the rectangle we simply need to multiply length and breadth. The following are the steps to follow to solve this problem.

- First, we will define length L and breadth B.
- Then we will define the area of rectangle A.
- Then calculate the area of the rectangle by multiplying the length(L) and breadth(B).
- After multiplying result will assign in A and show the output.

**Example: Area of Rectangle Program in C#.**

The following C# Program will calculate the area of the rectangle.

using System; public class AreaOfRectangle { public static void Main() { int Length = 15; int Breadth = 6; int Area = Length * Breadth; Console.WriteLine($"Area of Length {Length} and Breadth {Breadth} Rectangle is {Area}"); Console.ReadKey(); } }

**OUTPUT: Area of Length 15 and Breadth 6 Rectangle is 90 **

**Example: Area of Rectangle Program in C# by taking input from the user**

The following C# Program will allow the user to input the length and breadth of the rectangle and then calculate the area and display it on the console.

using System; public class AreaOfRectangle { public static void Main() { Console.WriteLine("Enter the Length of a Rectangle: "); int Length = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("Enter the Breadth of a Rectangle: "); int Breadth = Convert.ToInt32(Console.ReadLine()); int Area = Length * Breadth; Console.WriteLine($"Area of Length {Length} and Breadth {Breadth} Rectangle is {Area}"); Console.ReadKey(); } }

**Output**

**Time Complexity**: **O(1) **

In the next article, I am going to discuss **how to calculate the Area of a Square in C#** with Examples. Here, in this article, I try to explain **how to calculate the Area of a Rectangle in C#** with Examples and I hope you enjoy this article.