27
cylinder 18 feet diameter x 1.5 feet deep volume = 381 cubic feet
"3 feet round" is not clearly defined: is that the radius, the diameter, or the circumference?
1.963 cubic feet
Does "15 foot round" refer to Perimeter, Diameter or Radius.
1,000,000 US gallons is about 134,000 cubic feet. A round tank of 56 feet diameter by 56 feet high will hold 1 million US gallons. Also a round pond of about 413 feet diameter by 1 foot deep.
None! If there was dirt in it then it wouldn't be a hole.
The area of a hole 4 feet in diameter and 19 feet deep is: 76 square feet. (4 x 19 = 76).
There is no dirt in a hole that is 3 feet deep and six inches in diameter.
21 foot what? Radius, diameter or circimference? Presumably 4 feet deep?
There are 3,634 liters (960 gallons) of water in a pool that is four feet in diameter and 8 feet deep.
About 8.5 (Pi*(6/12)^2*290)/27
The volume of an area 24 feet round and 45 inches deep is: 1,700 cubic feet.