36 cubic feet of dirt=)
Trick question. The pool is empty but the drain is open. With an open drain, the pool will never fill, unless the water entering exceeds the water draining.True,-----------> 20 hours
17.55
Depends on the density of 'dirt'. I'll guess about 2.5 x that of water. 13 x 20 x 6 x 62.4 x 2.5 / 2000 = 121.68 tons of course if my guess for dirt is too high, just divide by 2.5 and multiply by the real specific gravity of dirt.
About 18,000 gallons.
877.
Dirt has varying densities, but on average, 18 tons of dirt would fill about 12 cubic yards.
you need to post the circumference of the pool.
Assuming 20 feet by 40 feet, 20x40x4 = 3200 cu ft = 3200/27 = 120 yards = 320,000 pounds
cost to recoat a ,pool 20 by 40
6,400 ft3
17,953.2 gallons