Best Answer

18 sq m = 193.75 sq ft = 27900 sq in

at 1 inch deep = 27900 cu in = 16.15 cu ft

sand weighs 100 lbs/cu ft

You need 100 x 16.15 = 1615 pounds or 16.15 cu ft = 0.6 yards

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Q: How much sand would you need for a area 18 square meters 1 inch high?

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160 square meters.

18 meters (length x height).

Think of the room as a box with four sides and a bottom. You want to know the area of the bottom. You know that the total area of all four sides added together is 120 square meters. You don't know the dimensions of each wall yet, but you know the ratio: length is twice the breadth or width. You know that the height of each side is 4 meters. So use those values to assign variables to the length and width of each side. Each set of opposite sides will be equal in area. Say there are four sides: A, B, C and D. Sides A and C are opposite each other; sides B and D are opposite each other. Say sides A and C are the longer sides. That means that sides A and C are each 2x meters long and 4 meters high. The area of each side is 8x square meters. Sides B and D are the shorter sides. They are each x meters long and 4 meters high. The area of each side is 4x square meters. Now you have an expression for the area of each of the four sides. Set their sum equal to 120 square meters and solve for x. 8x + 8x + 4x + 4x = 120 24x = 120 x = 5 So x = 5. That tells you that the length of sides A and C is 2(5) = 10 meters each, and the length of sides B and D is 5 meters each. That gives you the information to solve for the area of the bottom of the box, or the floor. Just multiply the lengths: 5 x 10 = 50 square meters. The floor of the room is 50 square meters. Two of the walls are 10 x 4 or 40 square meters each, and two of them are 5 x 4 or 20 square meters each. Altogether the four walls are 40 + 40 + 20 + 20 = 120 square meters. Drawing a diagram in these kinds of problems really helps!

Assuming the lot is square, you will need to find the perimeter of the lot. The perimeter is equal to the sum of the length of every side of the figure. In this case, (again, assumed), the figure is a square. This square has two sides of length 44 meters and two sides of length 48 meters. The calculation would be as follows:(44 + 44 + 48 +48) = 184 meters of fencing.If you also needed to find the number of square meters of fencing actually needed to build the fence, you could then multiply 184 (the total length of the perimeter you intend to enclose) by the desired height of the finished fence. Say you wanted a 2-meter-high fence.You could then calculate:184 meters long x 2 meters high = 368 meters^2, or 368 square meters of fencing.

Height = 2300mm = 2.3m, Length = 7000mm = 7m Area = Length * Height = 2.3*7 = 16.1 sq m

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4.047 square meters.

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