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
450mm !
17.71653 inches.
45cm
You need only 8 and half sheets of slab.
450 mm = 45 cm
1 cm = 10 mm therefore the shelf is 450mm 450mm/9mm = 50 books