It depends on the density of the sand. Certainly, you are talking about 56 cubic feet, but you will need to know the bulk density of sand to figure out how much that weighs.
540 feet2
To calculate the amount of sand needed to fill a sandbox measuring 4 feet long, 4 feet wide, and 2.5 feet deep, first find the volume by multiplying the dimensions: 4 ft x 4 ft x 2.5 ft = 40 cubic feet. Therefore, you will need 40 cubic feet of sand to fill the sandbox. If you're purchasing sand, check the bag specifications to determine how many bags you'll need based on their volume.
Depends on the density of the sand.
just about 32 cubic feet of sand
32 cubic ft.
540 feet2
You need 4.27 cubic feet. Weight in pounds is deceptive for sand depending on how wet or dry the sand is.
To calculate the amount of sand needed to fill a sandbox measuring 4 feet long, 4 feet wide, and 2.5 feet deep, first find the volume by multiplying the dimensions: 4 ft x 4 ft x 2.5 ft = 40 cubic feet. Therefore, you will need 40 cubic feet of sand to fill the sandbox. If you're purchasing sand, check the bag specifications to determine how many bags you'll need based on their volume.
18ft³
72 cubic feet
One cheap DIY idea for creating a sandbox is to use a large plastic storage container or a wooden crate filled with play sand. Another option is to repurpose an old tire by filling it with sand and creating a circular sandbox. You can also build a simple wooden frame and fill it with sand to create a custom-sized sandbox.
Depends on the density of the sand.
It will take 72 sq. ft. of sand. Or 2.66 sq. yds. That will fill the box even.
just about 32 cubic feet of sand
32 cubic ft.
4 x 6 x .75 = 18 cu ft of sand
To build a sandbox with a cover, you will need to first construct a box frame using wood or other suitable materials. Next, fill the box with sand to create the sandbox. Finally, create a cover using a tarp or wooden panels that can be easily placed over the sandbox to protect it when not in use.