1 inch is equal to 2.54 centimeters.
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1.27 centimeters1 inch = 2.54 centimeters half an inch:= 0.5 inch= 0.5 inch * 2.54 centimeters/1 inch= 1.27 centimeters
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]!
1 inch = 2.54 centimeters (exactly, by definition). Multiply by this number to convert from inches to centimeters.
2.54 cm/inch rounds to '3'
2.54 centimeters are in a inch.