CPM Homework Banner

Home > CC1 > Chapter 2 > Lesson 2.2.3 > Problem 2-47

2-47.

Draw and label two different rectangles, each with perimeters of 20 units. Do the rectangles have the same area? Explain your thinking. 2-47 HW eTool (CPM). Homework Help ✎

Your rectangles should have four sides, and the two sides opposite each other should be the same length.

Remember that the perimeter is the sum of the lengths of all of the sides of a rectangle.

The area of a rectangle is the number of square units inside of the figure. Try finding the area by multiplying the length of the rectangle by its width.

Now try finding the areas of your rectangles. Are they the same?

Perimeter = 4 + 4 + 2 + 2 = 12 units

Your rectangles should not have the same areas because the dimensions are different. This means the products ((length)(width)) will be different as well.

Use the eTool below to draw different rectangles.
Click on the link at right for the full eTool version: 2-47 HW eTool