Complete surface area: (2*pi*2.52)+(5*pi*27) = 463.385 square feet rounded to three decimal places
Get the summation of the AREA of all columns and multiply with the effective height.
To calculate the self-weight of a column, first determine the volume of the column by multiplying its cross-sectional area by its height. Then multiply the volume by the density of the material the column is made of (typically concrete or steel) to obtain the self-weight.
Height and diameter will give you the volume, if you know the density you can then calculate weight from that.
Surface area of a cylinder (the column) = pi*diameter*height and measured in square units.
The diameter of the water column does not affect the pressure.It is the height of the column that determines the pressure at the base.(and also the barometric pressure and temperature).
Pi x diameter x height.
To calculate the self-weight of a column, you need to know the volume of the column (cross-sectional area multiplied by height) and the density of the material the column is made of. Multiply the volume by the density to get the self-weight of the column.
The height of the mercury column is not affected by the diameter of the tube. Here is the proof: Pressure is force per unit area; P =F/A. Force, F = mass (m) x gravity acceleration (g), and mass = density( d) x volume (V) Therefore, P = (d x V x g) / A. Since volume (V) = Area (A) x height (h), then P = (d x A x h x g) / A, which upon cancelling A from numerator and denominator gives P = d x h x g. This shows that diameter of the tube has no effect on height of mercury inside the barometer tube.
How to calculate round column volume. +== No formula given so how can the "answer" be useful? The volume of a round column of radius r and height h is that of any cylinder: r^2.pi.h.
3
The volume of a cylinder that has a diameter of 20 mm and a height of 15 mm is 4,712.39 mm3
Water column head is expressed either as the height of the column ... 6 meters here ... or else as the pressure at the bottom ... 58.842 kPa here. 'Kg' can't be a unit of water column head, and the diameter of the column is irrelevant.