It depends upon the size of the object to be measured . for small beads , thickness of a page and nails of finger can be calculated in mm .An instrument called screw gauge is used for the same.
The diameter does not affect the length. It is a separate dimension. Diameter is the cross sectional measure of a circular object.
the nearest millimeter
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 cheak the diameter of something
To calculate the thickness of a piece of string, you can use a micrometer or caliper to measure its diameter directly. If you don't have these tools, you can wrap the string around a cylindrical object, count the number of wraps, and measure the total length of the wrapped section. Divide the total length by the number of wraps to find the thickness. This method assumes that the string is uniform in thickness along its length.
Divide millimeters by 10: 56 millimeters is 5.6 centimeters.
Diameter is the width of a circular or spherical figure or object. Something 180 inches in diameter is also 180 inches in width or thickness.
To show the diameter of an object, measure the distance across the object through its center using a ruler or caliper. Ensure that the measuring tool is aligned straight across the widest part of the object. For circular objects, you can also use a string to measure around the circumference and then calculate the diameter using the formula: diameter = circumference/π. Finally, visually indicate the diameter by marking the endpoints on the object or using a diagram.
An internal caliper gauge.
The diameter of the internal measurement of the cylinder.A mathematical cylinder only has one diameter.A real world object that is a cylinder (e.g. a pipe) has a wall with a thickness and thus the internal and external diameters will differ by twice the thickness of the wall.
You cannot. A circle is a 2-dimensional object which has an area but no thickness and, therefore, no volume. A litre is a measure of volume. You cannot measure an object with no volume using units that are intended for volume.
Mechanical calipers are typically used to measure the distance between two opposing sides of an object, such as the outer diameter of a circular object or the thickness of a material. They are suitable for measuring various substances like metal, plastic, wood, paper, and fabric.