How many linear feet of fencing are required?

Question

If a rectangular in-ground pool has a length that's 2 feet less than twice its width, and the area of the top of the pool is 480 square feet, how many linear feet of fencing are required, assuming the fence is placed 1 foot from the edge of the water on all sides?

Answer 1

w represents the width

2w - 2 represents the length

480 = w(2w - 2)

 

Can you solve for w?

Then determine the length?

 

After that add 2 to each dimension and calculate the perimeter.