KBC 14: How many centimetres are there in an inch?
A) 4.22
B) 3.48
C) 2.54
D) 1.76
Answer: 2.54
A centimetre (international spelling) or centimeter (American spelling) is a unit of length in the International System of Units (SI). It is represented by the symbol cm and is equal to one hundredth of a metre. The prefix centi is used in SI to denote a factor that is one hundredth of a meter. Within the centimeter–gram–second (CGS) system of units, which is no longer in use, the centimetre served as the fundamental unit of length.
Though for many physical quantities, SI prefixes for factors of 10^3—like milli- and kilo-—are often preferred by technicians, the centimetre remains a practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an average adult person.
1 centimetre= 10 millimetres
In both the British imperial system and the United States customary system of measurement, the inch is a unit of length that is denoted by the symbol in or ′′. It is the same as 1/36 of a yard, which is the same as 1/12 of a foot. The word “inch,” which derives from the Latin word “uncia,” which means “twelfth,” is also occasionally used to translate similar units in other measurement systems. However, it is commonly understood that the word derives from the width of the human thumb.
In the past, there were different standards for the exact length of an inch, but ever since the adoption of the international yard in the 1950s and 1960s, the inch has been based on the metric system and defined as exactly 25.4 millimetres.
Multiplying an inch’s value by 2.54 centimetres is the formula to use when trying to convert inches to centimetres.
Thus, 10 inches would be 25.4 centimetres.
KBC 14: Which of the following sporting events traces its origins back to 776 BC in Greece?
