We Need more info. which engine.. Make/model/year, and which diameter Bore, main/rod journals?
To calculate the outer diameter (OD) of a cylindrical object when you have the inner diameter (ID) and the thickness of the material, you can use the formula: OD = ID + 2 × Thickness. This accounts for the thickness on both sides of the cylinder. Simply add twice the thickness to the inner diameter to get the outer diameter.
To calculate the mass of a hollow tube, you need to know the outer diameter, inner diameter, and length of the tube. First, calculate the volume of the tube by subtracting the volume of the inner hole from the volume of the outer cylinder. Then, multiply the volume by the density of the material to determine the mass.
if you mean a cylinder with a hole through it like a pipe or tube, then it's pi x (Od2 - id2)/4 x h Od = outer diameter id = inner diameter
Consider going across the width of the pipe: Outer diameter = Thickness + Inner diameter + Thickness so 2*Thickness = Outer diameter - Inner diameter = 2.5 - 2.1 = 0.4 inches and therefore, Thickness = 0.2 inches.
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When determining the charge distribution in a system with cylinders, the charge per unit length on the inner surface of the outer cylinder is equal to the negative of the charge per unit length on the outer surface of the inner cylinder.
The inner diameter of a shop vac hose is typically around 1-1/4 inches, while the outer diameter is usually around 1-1/2 inches.
Remembering that there is an inner core inside the outer core - the radius of the outer core/mantle boundary is about 3,400 km. (the diameter is twice the radius).
by using a caliperhttp://www.technologystudent.com/equip1/vernier3.htm
The jaws of the vernier calipers are used to measure the external diameter of a cylinder. The jaws are placed around the object being measured, and the reading is taken from the scale on the main body of the calipers.
Outer radius minus inner radius Subtract the inside diameter from the outside diameter, then divide the difference by 2.
For the inner area, multiply...the inner diameter x pi x the length of the pipe.For the outer area, multiply...the outer diameter x pi x the length of the pipe.