Expand mobile version menu

Real-Life Activities

Real-Life Math

You are designing a rear panel on a car that will soon be going into production. As you work on the panel, you realize that you will need to leave space for the gas tank cover. But how much space?

In order to create a space for the flap, you need to know its length and width.

"Designers need math skills and use them constantly on the job," says George Speirs, a car body designer and engineer. "They need to calculate radius and be good at spatial relations. Designers figure out how to fit a number of items into a small package, and calculate how parts attach to different areas of a car."

As often happens, you don't know the length or exact width of the gas tank flap. Luckily, you do know its perimeter. Using these measurements, figure out the length and width of the rectangular gas tank cover.

Gas Tank Cover:

The perimeter of the rectangle is 25 inches.
The length of the rectangle is 0.5 inches more than 3 times the width.

What is the length and width of the rectangle?