### What Is Rectangle?

A Rectangle is a four sided-polygon, having all the internal angles equal to 90 degrees. The opposite sides of the rectangle are
equal in length which makes it different from a square.

### What Are Calculation Option Available In Rectangle?

Select which value you are Providing (Side Length(a) , Base(b) , Area(A) , Perimeter(P) , Diagonal(p=q))
input value and Click on Calculate .

A Rectangle Calculator Helps us to calculate different properties of Rectangle. Using Tube Calculator we can get the value of Side Length(a) , Base(b) , Diagonal(p=q) , Area(A) , Perimeter(P). We can get the value of three unknown variables only if values of two variables are known . By using following formula :

**Area of Rectangle:**
A = ab

Where

a = Side Length

b = Side Length (Base)

** Perimeter of Rectangle:**
P = 2a + 2b

Where

a = Side Length

b = Side Length (Base)

**Polygon Diagonal of Rectangle :**
p = q = √(a^{2}+b^{2})

Where

a = Side Length

b = Side Length (Base)

### How to use Rectangle Calculator?

Step by step procedure for Rectangle Calculator is as follows.

**Step 1: **Select which value you will be providing? Dropdown list has{Side Length(a) , Base(b) , Perimeter(P) , Diagonal(p=q)}

**Step 2: **Input appropriate value as per selected type in Step 1.

**Step 3: **Now click on "Compute" button to get result.

You will get Side Length(a) , Base(b) , Perimeter(P) , Diagonal(p=q) as per your value input.