Question

The width of a rectangle is 1/3 its length, l .

Which expression represents the perimeter of the rectangle?

Answer Choices

1/3l+l


2(l+1/3l)


4×1/3l


4(l+1/3l)

Part 2

The perimeter of the rectangle from Part 1 is 56 inches.

What is the area of the rectangle, in square inches?

Answer 1

The correct expression for perimeter is 2(l+1/3l). If you solve this for 56; 2(l+1/3l) = 56. You find that l = 21. If l = 21, then the width is 7, and Area = l * w, so the area of the rectangle is 147 square inches.