As an assistant in a pet store, one of your responsibilities is to fill the aquariums with water. One 50-gallon aquarium is 36 inches long and 16 inches wide, and is filled to a depth of 20 inches.
To the nearest whole number of cubic inches, how much water do you need to fill the aquarium to that depth?
72
0 230
O 3,600
O 11,520
O 29,800