Mrs. Castillo needs approximately 180 bags of sand to completely fill the sandbox, which matches option D.
To find the volume of the rectangular sandbox, you can use the formula:
Volume = Length × Width × Height
Given:
Length = 9 feet
Width = 6 feet
Height = 2 feet
Volume = 9 feet × 6 feet × 2 feet
Volume = 108 cubic feet
Now, you mentioned that each 50-pound bag contains approximately 0.60 cubic feet of sand. To find out how many bags are needed to fill 108 cubic feet:
Number of bags = Total volume of sandbox / Volume of one bag
Number of bags = 108 cubic feet / 0.60 cubic feet per bag
Number of bags ≈ 180 bags
Therefore, Mrs. Castillo needs approximately 180 bags of sand to completely fill the sandbox, which matches option D.