21.21 mm (0.835 in) except Shield nickels (1866-1883) 20.5 mm (0.807 in)
To find the circumference of the nickel, you can use the formula C=πd. Where C is the circumference and d is the diameter. π is a special constant with a value approximately equal to 3.14. Substituting your numbers into the equation gives you C≈3.14(21) or C=65.94 square mm.
20 millimeters
Radius is one-half of the diameter of a circle. Therefore, the radius of an eight-inch diameter circle is four inches. The diameter of a circle is a straight line joining a point on the circumference through the centre to the 'opposite' point on the circumference.
.75 inches or 19 Millimeters is the diameter so the radius is .375 inches or 9.5 Millimeters.
The answer depends on what measure of the circle is 14 mm.
21.21 millimeters wide
A US nickel has a diameter of 21.21mm
If you were to calculate the mass of a nickel you would use grams or milligrams if you were to measure the diameter of a nickel you would use millimeters.
U.S. nickels have a diameter of 21.2mm. The weight is 5 grams with a thickness of 1.95mm.
30.4mm
The diameter of a US nickel is 0.835 inches.
The diameter of a US nickel is 21.21 millimeters.The united states Nickel has a diameter of 21.21 mm or 2.2121 cm.
Assume that nickels are measured in diameter, and we want to form the certain number of nickels to form an inch. Let the diameter of the nickel be 22 millimeters, which is 2.2 centimeters. Note that 1 inch = 2.54 centimeters. Then, there is no definite number of nickels that exactly form an inch since: 2.54 centimeters * 1 nickel / 2.2 centimeters = 1.15... nickels [and we obtain the "incomplete" nickel to form an inch]!
A US nickel coin has a diameter of 2.121 cm and its thickness is 0.195 cm
A millimetre is a unit of measurement of length. A diameter is not. The question, therefore, makes no sense.
US nickels have a diameter of 0.835 inches and a thickness of 0.077 inches. However, coin dimensions are normally measured in millimeters so those numbers are 21.2 mm by 1.95 mm.
To find the circumference of the nickel, you can use the formula C=πd. Where C is the circumference and d is the diameter. π is a special constant with a value approximately equal to 3.14. Substituting your numbers into the equation gives you C≈3.14(21) or C=65.94 square mm.