## How to Solve Rectangle Area Problems Series

The How to Solve Rectangle Area Problems Series is a series of posts on the basics of solving rectangle area problems. This post is a summary of the rectangle area series.

1.) Calculating Areas of Geometric Figures discusses the notion of area and the intuitive derivation of the formula $A = l \times w$ where $A$ is the area of a rectangle, $l$ is its length and $w$ its width.

2.) How to Solve Rectangle Area Problems Part 1 discusses the basic problems involving area of rectangles.

3.) How to Solve Rectangle Area Problems Part 2 discusses intermediate problems involving area of rectangles. This involves solving the area given the rectangle’s perimeter.

4.) Rectangle Area Problems Quiz is a self quiz to be able to determine your understanding regarding rectangle area.

I hope you enjoyed this series. More series to come in the future.

## How to Solve Rectangle Area Problems Part 1

The area of a rectangle including square are the simplest to calculate.  As we have discussed in the previous post, they can be calculated by multiplying their length and the width. That is if a rectangle has area $A$, length $l$ and width $w$, then, $A = l \times w$ or simply $A = lw$.

In this post, we are going to solve various problem involving area of rectangles.

Problem 1

The length of a rectangle is 12 centimeters and its width is 5 centimeters. What is its area?

Solution

Using the representation above, $l = 12$ and $w = 5$. Calculating the area, we have $A = 12(5) = 60$.

The area is 60 square centimeters.  Continue Reading