Mr. Kimball has a swimming pool that measures 20 feet long by 15 feet wide. He is adding a walkway around the pool that is 3 feet wide all around. What will be the perimeter of the walkway?
20 + 6 = 26
15 + 6 = 21
P = (2 * 26) + (2 * 21)
P = ?
Can it be: (2*20) + (2*15) + (4*3)
Draw this out on a piece of graph paper. Then you'll see which answer is correct.
But wouldn't it be (2*23) + (2*18) than?
The walk goes all the way around the pool.
The pool is 20 feet long and has 3 feet of walk on one end and 3 feet of walk on the other end. Thus the length of the walk on each side is 26 feet.
The pool is 15 feet wide and has 3 feet of walk on each side. Thus the total length of the walk on each side is 21 feet.
To find the perimeter of the walkway, we need to add the lengths of all four sides. Let's break it down into steps:
1. First, calculate the new dimensions of the pool after adding the walkway. Since the walkway is 3 feet wide on each side, we add 6 feet to both the length and the width of the pool.
So, the new dimensions of the pool will be 26 feet (20 + 6) long by 21 feet (15 + 6) wide.
2. Now, let's calculate the perimeter of the walkway. Since the walkway is on all four sides, we need to add the lengths of the four sides.
The two lengths of the walkway will be 26 feet each, and the two widths of the walkway will be 21 feet each.
3. Finally, add up the four sides to find the total perimeter of the walkway:
Perimeter = 26 feet + 26 feet + 21 feet + 21 feet.
Perimeter = 94 feet.
Therefore, the perimeter of the walkway around Mr. Kimball's swimming pool will be 94 feet.