What is the total perimeter of the fence that John needs in order to completely enclose his pool within the designated area?

To calculate the perimeter of the fence, we need to know the dimensions of the designated area where John wants to enclose his pool. The perimeter of any shape is the total length around its outer boundary.

1. Determine the shape of the designated area: Is it a square, rectangle, or some other shape? This information is crucial because different shapes require different formulas to calculate their perimeter.

2. Measure the dimensions: If the area is a square or rectangle, measure the length and width using a measuring tape. If it is a different shape, use a geometric method to determine the lengths of the sides.

3. Calculate the perimeter: Once you know the dimensions, use the appropriate formula to calculate the perimeter of that specific shape.

- For a rectangle: The perimeter is calculated by adding the lengths of all four sides, which can be done using the formula: P = 2(l + w), where P represents the perimeter, l represents the length, and w represents the width.

- For a square: Since all sides of a square are equal in length, you can use the formula: P = 4s, where P represents the perimeter and s represents the length of a side.

- For other irregular shapes: Break down the shape into smaller, recognizable components and calculate the perimeter of each component. Then, add up the perimeters of all components to get the total perimeter.

4. Once you have the dimensions and selected the appropriate formula, plug in the values and do the calculation. The result will give you the total perimeter of the fence needed to enclose the pool within the designated area.

Keep in mind that it's important to double-check your measurements and calculations to ensure accuracy.

To find the total perimeter of the fence that John needs to completely enclose his pool, we need more information. Specifically, we need the dimensions of the designated area where the pool is located. Can you provide the length and width of the designated area?