Question

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 1

Answer: 4w + 12

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