To convert 20 cm to inches, you can use the following formula:
1 inch = 2.54 cm
So, to convert 20 cm to inches, you would divide 20 by 2.54:
20 cm / 2.54 = 7.87 inches
Therefore, 20 cm is equal to 7.87 inches.
Real-life example:
Let’s say you have a ruler that measures in centimeters, and you want to know how many inches a 20 cm length is. By using the conversion factor of 1 inch = 2.54 cm, you can easily calculate that 20 cm is equal to 7.87 inches.
FAQs:
1. Why do we need to convert units?
Converting units allows us to easily compare measurements in different systems and make calculations more convenient. It also helps in understanding and communicating measurements effectively.
2. Can I convert units without using a conversion factor?
While it is possible to convert units without a conversion factor, using a conversion factor ensures accuracy and consistency in the conversion process.
3. Is there a simple way to remember common unit conversions?
One way to remember common unit conversions is to create a conversion chart or use mnemonic devices to help you recall the conversion factors easily. Practice and repetition also help in memorizing common conversions.