An 18-foot diameter measures 18 feet across the widest part of a circle. The diameter itself is already expressed in feet, so it remains 18 feet. If you need to convert it to other units, 18 feet is equivalent to 216 inches or approximately 5.49 meters.
Diameter = 18/pi = 5.73 feet, approx.
fifty-six The circumference of an 18-foot diameter circular swimming pool is: 56.55 feet
If that is 4 feet tall and 18 inches in diameter, it would be 16.83 gallons.
18 ft diameter is assumed. Area = Pi/4 x 182 = Pi x 81 = 254.469 ft2
216 square feet (12 x 18 = 216)
A circle with a diameter of 18 feet has an area of 254.5 square feet.
A circle with a diameter of 18 feet has a perimeter of 56.5 feet.
A linear foot is the same as a foot. So, an 18-foot diameter circle would measure 18 linear feet in diameter!
Diameter = 18/pi = 5.73 feet, approx.
Area = 254 square feet.
It would be about 56.5 feet.
36 feet across, 18 feet from centre to circumference, or 113.1 ft (approx) around the circle.
fifty-six The circumference of an 18-foot diameter circular swimming pool is: 56.55 feet
If that is 4 feet tall and 18 inches in diameter, it would be 16.83 gallons.
Assuming that the pool diamater diminishes 1 foot for each foot of height, and the pool is filled to the top, the total capacity would be about 6439 gallons.
18 ft diameter is assumed. Area = Pi/4 x 182 = Pi x 81 = 254.469 ft2
216 square feet (12 x 18 = 216)