John wants to build a fence around his pool. The pool is 22 feet long by 23 feet wide defense is better be 15 feet from the edge of the pool.
To calculate the length of the fence, we need to add up the perimeter of the pool and the distance the fence will be from the pool.
The perimeter of the pool is the sum of the lengths of all four sides:
Perimeter = 2 × (length + width)
Perimeter = 2 × (22 + 23)
Perimeter = 2 × 45
Perimeter = 90 feet
To add the distance the fence will be from the pool, we need to add twice the distance to both the length and width of the pool:
Length of the fence = 2(length + 15) + 2(width + 15)
Length of the fence = 2(22 + 15) + 2(23 + 15)
Length of the fence = 2(37) + 2(38)
Length of the fence = 74 + 76
Length of the fence = 150 feet
Therefore, John needs a 150-foot fence to surround his pool.