cross section is computed using the simplified form of the continuity equation where discharge equals the product of velocity and cross-sectional area of flow. Computation of cross-sectional area is strictly a geometry problem; it is determined by inputting incremental depths of water (stage) to a channel cross section defined by surveyed dis-
To your question, the cross sectional area (A) of an open ended cylinder will be the height of the cylinder (H) multiplied by the perimeter that the cylinder forms (P). Where P= 2ㅠr, and r is d radius of the cylinder. I.e, A= (H) * (P) or 2ㅠrH If it is one end closed, A= 2ㅠrH + ㅠr^2. One meter, millimeter, inch or whatever. For example, as a fitter and turner I was recently required to find the cross sectional area of a piece of rusty old 2 1/2" hexagonal steel bar. It measured 63.4mm across the flats. (Steel bar always seems to be provided a bit under size and it WAS rusty.)
Jun 10, 2014 · The cross sectional area of a triangular prism is simply the area of the base. The formula for the area of a triangle in one half base times height. Remember that a triangular prism by definition has a triangle for a base. elec calc™ allows the calculation of cable cross-section according to the standard, to the environment, to the method of installation and to the users’ constraints. elec calc™ deduces automatically the correction factors to apply to the required current taking also into account the THD flowing in the cable. Cross-sectional area for the calculation of carotid artery stenosis on computed tomographic angiography Presented at the poster session of the 2012 Vascular Annual Meeting of the Society of Vascular Surgery, Washington, DC, June 8, 2012.
For toroidal powder cores, the effective area(A) is the same as the cross sectional area. By definition and Ampere’s Law, the effective magnetic path length is the ratio of ampere-turns(NI) to the average magnetizing force. Using Ampere’s law and averaging the magnetizing force gives the formula for effective path length. Mean Magnetic Path ... So here's the formula: Cross Sectional Area of a Cylinder = π x R2 where π is a constant (= 3.14159265), which is the ratio of the circumference to diameter of a circle, while R is the radius of the cylinder. So all you need to know, to be able to calculate the cross sectional area, is its radius. These frontal areas were collected from various sources (including the A-Square handloading manual Any Shot You Want) or computed by the simple formula: area = pi (3.1416) times the radius (1/2 the bullet diameter) squared. For an expanded list showing many more calibers see the Expanded Bullet Cross-Sectional Area List. between the sections. (The end areas will be divided by 2 to come up with the average end area). This formula is exact when A. 1. equals A. 2. in both area and configuration, but is only approximate when the cross sections have different areas. It is generally accepted as close enough for computing earthwork volumes. While the main focus here is on the cross-sectional area of a form, you can easily find the volume of the form with this information. With most shapes, you just multiply the area from the cross section by the length of the object. Certain shapes, such as spheres and cones, have different formulas, meaning it's not a one-size-fits-all rule.