Question 82110
In order to solve this, you need to set up an equation.
First we'll find the length.
The length is going to be twice the width, so l = 2w.
Then it also says it's eight more than twice the width, so l = 2w+8.
Now, set up your equation for the perimeter (add all the sides).
2w + 8 + 2w + 8 + w + w = 58
Combine like-terms.
6w + 16 = 58
Subtract 16 from both sides.
6w = 42
Divide by six on both sides.
w = 7
To check your answer, simply plug the answer back into the equation.
Also, if you have any further questions, don't hesitate to ask.
Good luck!
-weepingwillowcats