MATHEMATICS

# Calculator for Border Area

This calculator will help you find the area of a border. The formula used in this calculator is listed below.

To use this calculator, you will need to know the outer length, inner length, {{mathVariabl3}} and {{mathVariabl4}}.

To give you a better mental model of the border, you can look at the visualization below. You can navigate the 3d-model of the border as you like.

## Border Area Formula

Formula variable explanation:

- B represents the area.
- l1 represents the Outer length.
- l2 represents the Inner length.
- w1 represents the Outer width.
- w2 represents the Inner width.

### LaTeX formula

If you are working in a TeX based editor you could use this TeX formula to calculate the border area.

\mathrm{B}= l1\cdot w1- l2\cdot w2

## How To Calculate The Border Area Your Self

Calculating the area is rather simple when you know the formula presented above. Follow these steps:

**Then change the following variables with your values:**

**l1** shall be changed with the *Outer length* of your border. As an example **l1** could be changed to 10.**l2** shall be changed with the *Inner length* of your border. As an example **l2** could be changed to 10.**w1** shall be changed with the *Outer width* of your border. As an example **w1** could be changed to 10.**w2** shall be changed with the *Inner width* of your border. As an example **w2** could be changed to 10.

- Now you can enter this in to your calculator and you will get your answer.