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Area and perimeter
Rectangles are common shapes that you will often find the need to compare. Who has a bigger poster size? Who's yard has more grass to mow? We'll learn about length, width, area, and perimeter--about all you need to know to begin comparing!
If you know the perimeter and the length of a rectangle, you can figure out the width. Don't believe us? Watch and become a believer.
If you know the area and perimeter of a rectangle, you can figure out the length and width. STILL don't believe us?Just watch.
We know the length and width of two rectangles. Guess what? We can compare the areas!