The answer depends on what other information you have.
Diameter x Thickness
by the ton
I think you are asking how do you calculate the VOLUME of a disk 250mm with a thickness of 20 mm. If that is so, then find the area of the circle using the Area = pi times radius squared formula and then multiply by the thickness to get cubic millimeters volume.
Subtract 50cm from external diameter.
If the bar is a three dimensional object it will have some thickness. Then, assuming it is oblong in shape and knowing its length, width and thickness: Surface_area = 2 x (length x width + width x thickness + thickness x length)
By thick control.
put it in water
You need to specify the wall thickness in order to calculate the weight.
For steel, the formula is (material thickness) x (inches of cut) x 50,000.
With a micrometer. Usually in terms of gauge, 22 ga steel is .0299 in thick, the actual thickness for different materials varies aluminum of the same gauge is somewhat thinner than steel, galvanized steel is a little thicker than plain steel of the same gauge. A micrometer is one way to measure it, there are gauge plates that have slots for each size.
kg = 6.16546 x width mm x OD2 x bore2 ---- 1000000
Low cost carbon steel caskets are usually made of 20-gauge steel. This means that 20 sheets of 20 ga steel have a thickness of one inch. Twenty-gauge steel sheets have a thickness of 0,8 mm; this is the same thickness as used in many automobile body panels. Standard steel caskets use 18 ga steel sheets which have a thickness of 1 mm. Upper end steel caskets use 16 ga steel sheets with a thickness of 1,3 mm. 16 sheets of 16 ga steel have a thickness of one inch.
please i will said what i do but please make acheck if u have asteel pipe and want to know the weight of it you have to know the following 1- the outer diameter 2- the thickness of the pipe the u do the following ] (outer diam - thickness) * 3.14 * 7.85 * thikness * lenght of pipe (in millemeter) / 1000000 = the weight of the pipe * Note that : all dimension are in millimeter
3mm thickness of stainless steel tank. 3mm thickness of stainless steel tank.
because the thickness of the crust is different
17/64ths of an inch for steel
cosine @-= t / vt