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

Answer:

The length of fencing is 146 feet.

Step-by-step 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.