Area of Rectangle Formula
Formula
Summary
The area of a rectangle is given by the width multiplied by the height.
Expression  Description 

The area of the rectangle.  
The width of the rectangle.  
The height of the rectangle. 
Usage Notes
The Area of a rectangle is given by its width multiplied by its height. For example, the area of a rectangle with with a width of three units and a height of four units is equal to twelve units squared.
To calculate the area of a rectangle first you set up the equation, then substitute in the rectangle's width and height and multiply.

Substitute the width and height of the rectangle into the formula.

Evaluate multiplication.

The area of the rectangle is 4 units squared.
To calculate the area of a rectangle first you set up the equation and then plug in the width and height.

Substitute the width and height of the rectangle into the formula.

Evaluate multiplication.

The area of the rectangle is 12 units squared.
To calculate the area of a rectangle first you set up the equation and then plug in the width and height.

Substitute the width and height of the rectangle into the formula.

Evaluate multiplication.

The area of the rectangle is 12 units squared.