a ton
It depends on the shape of the 40m2. If it is 1m x 40m then, despite the area being 40m2, there is not a single 450mm x 450mm in it. The shape is simply not wide enough. But if you're allowed to cut up the slabs to make them fit, then you need 198 of them in order to cover 40 m2 of area.
About 430.5 square feet. (430.556417 square feet)
8m*5m=40 m2 The area of the rectangle is 40m2
40m 2 equates to 131 feet 10.7 inches.
430.556417 square feet
25kg = 25000 g1ha = 10000 m2 25000 g / 10000 m2 gives 40m2 for 100g
Well, everybody has their size foot so I guess it is. God makes no mistakes.
The 3 measurements make a cuboid 3D shape: 10m long x 6m wide x 2m depth. 1 top and 1 bottom = 10 x 6 x 2 = 120m2 2 sides = 10m x 2m x 2 = 40m2 2 ends = 6m x 2m x 2m = 24m2 Therefore total area is: 120 + 40 + 24 = 184m3
Metres squared (example: 40m2) or Square feet (40 sq.ft or 40 ft2) or Square yards (12 sq yds or 12 yds2). It will also depend on the surface being painted. Raw or rough surfaces require more paint.
Simply Pressure = Force/Area Force=12N Area=40m2 P=12/40 Pressure=0.3 N/m2 For Fun: would the pressure be greater from an elephant or an adult male? Area of one elephant foot = 0.75 x 0.75 m2 Area of four elephant feet = 2.25 m2 Area of one human foot = 0.27 x 0.1 m2 Area of four human feet = 0.108 m2 Weight of elephant = 30000 N Weight of human = 850 N Pressure on elephant's feet = 13333 N Pressure on human's feet = 7870 N Not a Huge difference!!!!
Figure it like this: Because each side of the rectangular plot will have a one-meter wide sidewalk adjoining it, you know that the sidewalk, on each side of the plot will be two meters longer than the plot's dimensions. However, if you figured the length by adding the areas of each length of sidewalk, you would be wrong, because each length of sidewalk shares two corners with the adjacent lengths. Each corner is one square meter, and each length of sidewalk without two corners is the same as the dimension of the plot, times one meter. So essentially, you just add the plot dimensions and then add four. In other words, 2(13m * 1m) + 2(20m * 1m) + 4m2 = 26m2 + 40m2 + 4m2 = 70m2. Another way to figure it would be to figure the area which will be enclosed by the outer edge of the sidewalk (again, two meters longer than the plot on each side), and subtract the area of the plot itself, or: (15m * 22m) - (13m * 20m) = 330m2 - 260m2 = 70m2.