To convert 20cm to a different unit, we need to understand the relationship between centimeters and the unit we want to convert to. In this case, let’s convert 20cm to inches.
1. Start by knowing the conversion factor between centimeters and inches. 1 inch is equal to 2.54 centimeters.
2. Set up a proportion to solve for the unknown value in inches.
20 cm = x inches
1 inch = 2.54 cm
3. Cross multiply to solve for x:
20 cm * 1 inch = x inches * 2.54 cm
20 cm = x inches * 2.54
x inches = 20 cm / 2.54
x inches = 7.87 inches
Therefore, 20cm is equal to 7.87 inches.
Real-life example:
If you have a ruler that measures in centimeters and you want to know how many inches a 20cm length is, you can use the conversion factor to find out that it is approximately 7.87 inches long.
FAQs:
1. How do I convert centimeters to meters?
To convert centimeters to meters, divide the number of centimeters by 100. For example, 200cm is equal to 2 meters (200cm / 100 = 2m).
2. Can I convert inches to centimeters using the same method?
Yes, you can convert inches to centimeters using the conversion factor of 1 inch = 2.54 cm. Simply multiply the number of inches by 2.54 to get the equivalent length in centimeters.
3. Is there a shortcut to convert between different units?
You can use online unit conversion calculators or mobile apps to quickly convert between different units without having to manually calculate the conversion factor each time.