Correct!

Please review the explanation below:

Answer: 3

The Math formulas page will be helpful for this question. You must use the appropriate formula for the volume of a cylinder and recognize that its readius is half of the diameter shown. Once the volume is computed that Answer: is divided by 4000. Since only whole gallons are to be poured into the bucket the quotient is rounded down. The concept of rounding up or down (as appropriate to a particular situation) to produce a whole-number Answer: is an important one for you to understand.

Volume of bucket: (3.14) x (20)² x (60) = 75,360 cm³

75,360 ÷ 4000 = 18.84 gallons

The Answer: is rounded down because 19 whole gallons would not fit. Final Answer: 18 gallons.