The width of a rectangular dance floor is w feet. The

length of the floor is 6 feet longer than its width.

Which of the following expresses the perimeter, in

feet, of the dance floor in terms of w?

A) 2w + 6

B) 4w + 12

C) w^2 + 6

D) w^2+6w

Answer: 4w + 12

Step-by-step explanation:

The perimeter of a rectangle is given by 2 (L + W)

Since the length is 6 feet longer than the width, this means that if the width is w then the length is w + 6

substituting this into the formula for calculating perimeter, we have

2 (w + w + 6)

= 2 (2w + 6)

= 4w + 12