Area Length Width. Whereas when we speak about the perimeter of a rectangle it is equal to the sum of all its four sides. Now as we know Area of a rectangle l x b here l length and b breadth.
The formula for the area of a rectangle is width x height as seen in the figure below.
Circle Area p r 2 Circumference 2 p r r radius. In Example 1 we found the area given the dimensions of the rectangle. In the formula for area A l is the length and w is the width of the rectangle. 150 a 10.