### How many square feet are in 7ft 2 inches long x 5ft 11 inches wide x 8ft 7 inches high?

Square feet measure area, you're looking for volume, which is cubic feet. 86 x 71 x 103 cubic inches. To get cubic feet divide by 1728 giving 363.96 cuft. If you're wanting to know the surface area of a solid with those dimensions then it is 2 x ((86 x 71) + (86 x 103) + (71 x 103)) ie 44554 sqin or 309.4 sqft

### How many 50 pound bags of sand do you need to fill a sandbox that is 86 inches long x 45 inches wide x 6 inches deep?

That depends on how many cubic feet of sand fit in that 50 pound bag. I can get you close, but cannot give the final answer. First convert your dimensions of the sandbox to feet. 86 inches = 86 / 12 = 7.166 feet 45 inches = 45 / 12 = 3.75 feet 6 inches = 6 / 12 = 0.50 feet Multiply the 3 together to determine the total cubic footage required... 7.166 *…