Question

The rectangular pool is 45 feet x 18 feet. The fence needs to be 5 ft away from the edges of the pool or a 5 ft border. How many feet of fencing would you need? The area is 810ft

Answer 1

The length of fencing is 146 feet.

Explanation:

The length of fencing is equal to the perimeter of the rectangle plus 8 times the width of the border between the edge of the pool and the fence. By Geometry, we find that the perimeter (
`p`), measured in feet, is equal to:

`p = 2\cdot (w+f)+2\cdot (l+f)` (1)

Where:

`w` - Width of the pool, measured in feet.

`l` - Length of the pool, measured in feet.

`f` - Width of the border, measured in feet.

If we know that
`w = 45\,ft`,
`l = 18\,ft` and
`f = 5\,ft`, then the length needed of fencing is:

`p = 2\cdot (45\,ft+5\,ft)+2\cdot (18\,ft+5\,ft)`

`p = 146\,ft`

The length of fencing is 146 feet.