Question

A rectangular deck has a length of 12 feet and a perimeter of 36 feet. What is the deck's width and area?

Answer 1

• Deck's width is 6 feet.
• The area is 72 sq. ft.

Explanation:

First, label it out:

• Length: 12 ft.
• Width: ?
• Area: ?

• Perimeter: 36 ft.

Then, we add up 12 twice (Since the length is on 2 sides):

• 12 + 12 = 24
• 36 - 24 = 12
• 12 - ? = ?

Now, we write down a 6 in the ?:

• 12 - 6 = 6.

Width = 6.

We are not done!

Now, we have to solve for area.

• 12 * 6
• = 72

Answers are:

Area = 72 sq. ft.

Width = 6 ft.