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.
32 cubic ft.
8*5*1/2 = 20 cubic feet.
15 * 5 * 0.5 = 37.5 cu ft. or 1.39 cu yards.
540 feet2
18ft³
72 cubic feet
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.
32 cubic ft.
8*5*1/2 = 20 cubic feet.
15 * 5 * 0.5 = 37.5 cu ft. or 1.39 cu yards.
8 ft * 10 ft * 0.5 ft = 40 cubic feet
4 x 6 x .75 = 18 cu ft of sand
It will take 72 sq. ft. of sand. Or 2.66 sq. yds. That will fill the box even.
2.37 cubic yards of dirt is needed to fill an 8'X4' that is 24" deep garden box. If the box is filled 12 inches, the amount of soil needed is 1.19 cubic yards and that should be deep enough for most vegetables.
All you have to do is find the maximum volume of your sandbox. To do this, multiply the length (6 ft.) by the width (6 ft.) by the depth (10 ft.). 6 x 6 x 10 = 360 cubic feet This is if you want to fill the sandbox to the brim. If you want something about half the depth so that the sand isn't falling out everywhere, you just multiply: 6 x 6 x 5 = 180 cubic feet