Question: how to calculate the perimeter of a kidney shaped pool?
Answer: Example: 50.24 x 3 = 150.72. This number is the volume and needs to be multiplied by multiplier 5.9 to determine gallons. To determine circumference or perimeter of the circle, Multiply 3.14 x Radius x 2. Example: 3.14 x 4(for 8′ spa) x 2 = 25.12′,(measurement for coping/tile).