# Write a function rule for the perimeter of a rectangle whose length is 6 feet more than its width. What is the perimeter of the rectangle when its width is 12 feet?

##### 1 Answer

Oct 18, 2017

The perimeter of the rectangle when

#### Explanation:

The perimeter of a rectangle is equal to 2 times the length

If we know that

#P = 2w + 2l#

#P = 2w + 2(w+6)#

#P = 2w + 2w + 12#

#P = 4w + 12#

This is our function for perimeter. Now, if the width is 12, we can simply plug in

#P = 4(12) + 12#

#P = 48 + 12#

#P = 60#

So the perimeter of the rectangle is 60 feet.

*Final Answer*