#### Answer

You would need to find the perimeter of a bulletin board if you want to add a decorative border to the bulletin board. The perimeter would tell you how much of the decorative material to buy.
You would need to find the area of a bulletin board if you want to cover the bulletin board in paper. The area would tell you how much paper will be required.

#### Work Step by Step

Perimeter and area are often needed to calculate how much material is needed for a project.