# Perimeter of a Rectangle with Given Area Calculator

Are you looking **to calculate the perimeter of a rectangle with a given area and a side?** Then, you are in the right place. Our calculator will assist you in finding the perimeter of a rectangle right away. After inserting the area `A`

and a side `Side 1`

(this is the side known to you), our calculator will give you the perimeter `P`

.

Please read on to learn more about:

- The perimeter of a rectangle;
- Equations to find the perimeter of a rectangle; and
- Other calculators that will help you answer any questions related to a rectangle.

## What is the perimeter of a rectangle?

The perimeter is a **quantity that measures the total length of 2-D or 3-D geometry's outer boundary**: measurement starts from one point (say point z) and ends at the same point (point z). A rectangle is closed by four perpendicular sides, and two of them are unique. **The perimeter of a rectangle equation is P=(a+b+a+b), which is basically a measure of all sides. In a simplified form: P=2×(a+b)**.

## How to use this perimeter of a rectangle with given area calculator?

To use our calculator, follow the below points:

- First, you should know area
`A`

and at least one side of the rectangle; - Insert the area value and known side value inside
**Area (A)**and**Side 1 (a)**fields; - Once inserted, our calculator provides you with the missing side
**Side 2 (b)**and the perimeter of the rectangle**P**. - Hurray! We believe now you can use our perimeter of a rectangle with given area calculator to find the perimeter of a rectangle quickly. If you are looking for ways to find every possible parameter related to a rectangle, you should check the next section.

## Let's capture the rectangles!

Here, we present to you all the calculators that will help you find answers to any questions related to rectangles:

- Area of a rectangle calculator;
- Dimensions of a rectangle calculator;
- Diagonal of a rectangle calculator;
- Rectangle diagonal angle calculator;
- Perimeter of a rectangle calculator;
- Surface area of a rectangle calculator;
- Length of a rectangle calculator;
- Width of a rectangle calculator;
- Length and width of rectangle given area calculator;
- Length and width of rectangle given perimeter calculator;
- Rectangle scale factor calculator; and
- Square feet of a rectangle calculator.

## FAQ

### How do you find the perimeter of a rectangle given area?

You can use the following points to find the perimeter of a rectangle given area:

- You need
**to know at least one side of the rectangle: call it**;`Side 1`

- Now
**use the area equation, i.e.,**; and`A=Side 1 × Side 2`

to find the unknown side`Side 2`

- Finally,
**use**.`Side 1`

and`Side 2`

to find the perimeter, i.e.,`P=2×(a+b)`

- Awesome! Now you know how to find the perimeter of a rectangle. Use our perimeter of a rectangle with given area calculator to get the perimeter at supersonic speed!

### How can you calculate the perimeter of a rectangle whose area is 20 m^2 and length is 4 m?

To find the perimeter:

- Find the width
`w`

by diving the area`A=20 cm^2^`

by length`l =4 cm,`

i.e.,`w=20/4=5`

; and - Once you get the width (
`w`

), the perimeter is calculated as`P=2×(w+l)=2×(5+4)=20 m`

.

### What is the difference between the area and perimeter of a rectangle?

The difference between area and perimeter are as follows:

- The area is a quantity that shows
**how much space a geometry occupies**, whereas the perimeter gives us**the measurement of the total length of the outer boundary of the geometry**; - The area of a rectangle equation is
`A=length×width`

, and the perimeter of a rectangle equation is`P=2×(length+width)`

. - SI unit of area is
**m**, and for perimeter, it is^{2}**m**.

### What is the perimeter of a rectangle 11m x 5m?

The perimeter of this rectangle is **32 m**. 11 m and 5 m are the length and width of a rectangle, respectively. Knowing length and width, you can calculate perimeter as `P=2×(11+5)=32`

.