Volume of a cylinder = pi*radius2*height
Volume = 143,138,815.3 cubic mm
The volume of a cylinder (V) = πr2h, where π=pi, r=radius of the base, and h=height.Assuming the cylinder has an OUTSIDE diameter of 450mm, the INSIDE diameter is 400mm and the radius (r) is 200mm, or 0.2m. Plug in the values of your cylinder:V= 3.1415927 * 0.2m * 0.2m * 6.5m = 0.816814m3, or about816.81 Liters
We have to assume that the "5m" is the length of the cylinder.Volume = (pi) R2 L = (pi) (0.45)2 (5) = 1.0125 pi = 3.1809 cubic meters = 3,180.9 liters . (rounded)
The formula to find the area of a circle is A = πr2, where A is area, π is pi (3.14159), and r is the radius. The radius is half the diameter, 1/2d or d/2. r = d/2 = 450mm/2 = 225mm A = πr2 = 3.14159 x (225mm)2 = 15904mm2
Fixed height desk chairs usually have a seat height about 450mm above the floor. Good adjustable chairs have a range from 350-520mm which allows them to be adjusted to suit 95% of people.
(0.45/2)2 x pi x 2 = 1/3rd of a cubic meter
450mm x 300mm 45cm x30cm 1350cm
0.45M
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.
450mm !
45cm
17.71653 inches.
You need only 8 and half sheets of slab.