15 * 5 * 0.5 = 37.5 cu ft. or 1.39 cu yards.
32 cubic ft.
540 feet2
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.
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.
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
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
12.5 cubic feet