The diameter of a nickel is 2.121 cm.
To find the perimeter of the nickel, we will use the equation 2(Pi)r
To find the radius, r, divide the diameter by 2.
2.121/2=1.0605
P = 2(3.14159)(1.0605)
= 6.6633 cm
Therefore, the perimeter of a nickel is approximately 6.66 cm.
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A US nickel coin has a diameter of 2.121 cm and its thickness is 0.195 cm
2.12 cm (or 21.2 mm)
A US nickel has a diameter of 2.121 cm. Because it's a circle it doesn't have a length.
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]!
2.12 cm (or 21.2 mm)