To convert inches to centimeters, you can use the conversion factor 1 inch = 2.54 centimeters.
Here’s how you can convert 21 inches to centimeters:
1. Write down the given value: 21 inches
2. Multiply the given value by the conversion factor:
21 inches x 2.54 cm/inch = 53.34 cm
Therefore, 21 inches is equal to 53.34 centimeters.
Real-life example:
Let’s say you have a TV that measures 21 inches in diagonal length. To convert this measurement to centimeters, you would use the conversion factor and calculate that the TV is approximately 53.34 centimeters in size.
FAQs:
1. Why do we need to convert units?
Converting units allows us to easily compare and work with different measurements in a standardized way.
2. Can I convert any unit to another unit using the same method?
No, you need to use the appropriate conversion factor for the specific units you are converting between.
3. Is there a shortcut to convert units without using a conversion factor?
While there are some common conversions that you may memorize, using a conversion factor ensures accuracy in your calculations.