The formula to find the circumference of a circle is:
Circumference = 2 x π x radius
where π (pi) is a mathematical constant approximately equal to 3.14, and the radius is half of the diameter.
If the diameter of the pool is 35 feet, then the radius is 35 / 2 = 17.5 feet.
Therefore, the circumference of the pool is:
Circumference = 2 x π x radius
Circumference = 2 x 3.14 x 17.5
Circumference ≈ 109.9 feet
So, the approximate circumference of the pool is 109.9 feet.