When measuring short distances, it’s often difficult to gauge exactly how big or small a measurement is. Luckily, there are plenty of everyday objects around that can serve as good references when you’re trying to figure out how big or small something is. For example, many of us have used a no. 2 pencil in school or still purchase them for our kids’ school supplies. However, the length of a no. 2 pencil won’t help you estimate 4 centimeters because it’s only 7.5 inches long.
A better reference for this measurement would be a squash ball, which is approximately 7.62 centimeters in diameter. This would make it about as close to 4 centimeters as you could get without a calculator.
Another great reference for this measurement is the inch, which is a popular unit of measurement in the United States and other parts of the world. In the United States, there are 12 inches in a foot and 36 inches in a yard. A ruler is typically 12 inches long and has lines that represent different inches. The longest line represents one centimeter.
To convert centimeters to inches, you simply divide the centimeter value by 2.54. This will give you the corresponding number in inches. For example, to find out how many inches is 4 cm, you would simply divide 4 by 2.54, which would yield a result of 1.57 inches. You can also use the decimal form of this equation by multiplying by 16 to get fractional inches with 1/16th accuracy.