Assuming the last "8" is also in feet, just multiply 16 x 16 x 8. The answer will be in cubic feet. If the 8 is in inches, divide by 12 first, to convert to feet.
32 cubic ft.
540 feet2
15 * 5 * 0.5 = 37.5 cu ft. or 1.39 cu yards.
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.
192
72 cubic feet
32 cubic ft.
4 x 6 x .75 = 18 cu ft of sand
540 feet2
18ft³
It will take 72 sq. ft. of sand. Or 2.66 sq. yds. That will fill the box even.
15 * 5 * 0.5 = 37.5 cu ft. or 1.39 cu yards.
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.
192
just about 32 cubic feet of sand
Volume of sand required = 7 ft * 7 ft * 1/6 ft = 49/6 cubic feet = 8.166... cubic ft.
lots and lots