approx. 6.28 in.
It is 6.2832 inches.
In the US, a billiards ball or pool ball is 2.25 inches in diameter. This is 1.125 for its radius. The only exception is the oversize cue ball, which is 2.375 inches in diameter.
The circumference of a 27-foot diameter circle is about 84.82 feet. (diameter x Pi = circumference).
Six feet. Circumference = 2PiR, or Pi * Diameter. Pi is close to 3, so a pool with circumference of 18' would have a diameter of 6'
Circumference of any circle = 2*pi*radius or diameter*pi
Circumference of the pool = 28*pi feet
Circumference of pool ball: 2*pi = 6.283 inches rounded to 3 decimal places
The diameter of a pool ball is 2 and 1/4 inch diameter. The radius of a pool ball is 1 and 1/8 inches. The radius is one half of the diameter.
In the US, a billiards ball or pool ball is 2.25 inches in diameter. This is 1.125 for its radius. The only exception is the oversize cue ball, which is 2.375 inches in diameter.
Because the standard cue ball used in American pocket billiards is 2.25 inches in diameter, the circumference is approximately 7.07 inches. You find this answer by using the formula for circumference of a circle given by C= 2 x pi x radius, where pi equals 3.14 and radius is 2.25 divided by 2 or 1.125 inches.
50.266
The circumference of a 27-foot diameter circle is about 84.82 feet. (diameter x Pi = circumference).
5.96 cubic inches. This volume is for a US regulation pool ball which is 2.25 inches in diameter. As a pool ball is used, its size slowly decreases and it becomes out of round. This is due to the abrasive pool chalk used in the game, which is more like sandpaper than like chalk. So, this number applies only to a new pool ball.
Six feet. Circumference = 2PiR, or Pi * Diameter. Pi is close to 3, so a pool with circumference of 18' would have a diameter of 6'
If the diameter is 25 feet then the circumference is 78.5 feet (approx).
Circumference of any circle = 2*pi*radius or diameter*pi
Circumference of a circle = (pi) x (diameter)C = (22) x (pi) = 69.115 feet (rounded)
Circumference of the circular pool: 20*pi feet