16foot
5.21073504 (gal us).... 4.3467648 (gal UK).... that doesn't help for in but im an auzzy and i don't need the answer...
12" x 12" x 1"= 144 cubic inches, which is equal to .623 gallons therefore a one thousand square foot roof receiving one inch of rain will catch 623 gallons.
Taking 1 inch to be about 2.5cm, an inch of rain on an area of 1m2 is approximatley 0.025m3, or 25000cm3. That is 25000ml or 25l of water.
One foot is exactly 30.48 centimeters. To convert centimeters to feet, you divide by that number.
16foot
A 24-inch diameter cylinder holds 23.5 gallons of water per foot of length/height.
It holds 702 cubic feet.
2.75 Imperial gallons.
A two inch pipe can hold 0.1632 gallons per foot. It takes slightly over 6 feet of two inch pipe to hold one gallon of water.
A 5-inch pipe will hold approximately 0.36 gallons of water per linear foot. This calculation is based on the formula for calculating the volume of a cylinder (V = πr^2h), where the radius (r) is half the diameter of the pipe (2.5 inches) and the height (h) is 1 foot.
About 0.35 cubic feet or about 2.6 gallons.
A 100-foot hose with an inside diameter of five inches can hold 102 US gallons of water.
1 Gallon
A square foot is not going to hold any water, because it's flat. You need a cubic measurements for volume.
Since the pool is 1477440 cubic inches, it'll hold about 6395.844 gallons of water.
12 cubic feet