This resource has been contributed by Winpossible, and can also be accessed on their website by clicking here - Area of a Rectangle
In this mini- lesson, you'll learn the formula used for calculating area of a rectangle. It will be shared with the help of some examples and practice questions with solution, and using video explanations by the instructor.
A rectangle is a four sided polygon, where opposite sides are parallel and congruent. The area of a rectangle can be obtained by multiplying the lengths of the two sides. If length of one side is l
and the length of the other side is w
, then the area of the rectangle is given by the formula:
Area = l
For example, the area of a rectangular room of dimensions 10 m and 20 m is 200 m2
The formula for finding the area of a rectangle can also be used to find the length of one side, if we know the area and the dimension of the other side.
length = Area / width.
width = Area/length.
For example: if the area of the rectangle is 120 cm2
and the length is 12 cm, then width works out to 120/12 = 10 cm.
This FREE mini-lesson is a part of Winpossible's online course that covers all topics within Geometry. Click on the video below to go through it. If you like it, you can buy our online course in Geometry by clicking here.