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Area of Rectangles

Math Content:

This applet allows for the exploration of the area of rectangles.

Release: 2015Q2, Semantic Version: 4.2.0, Build Number: 911.6-r, Build Stamp:

How to Use

Use the red points to adjust the size and location of the rectangle.


  • Show/Hide Base and Height- will reveal those measurements (rounded to the thousandths).
  • Show/Hide Area- will reveal the area, rounded to the hundredths.

Click and drag the measurements around the workspace as you wish.

Before using any of the buttons, explore the following:

  • Knowing that the background is a cm. grid, how can you estimate the area of the rectangle?
  • What is the relationship between the base, height, and area of the rectangle?
  • Write down a real-world scenario that would require you to know the area of a rectangle.