To convert 12 cm to inches, you can use the following steps:
1. Know the conversion factor: 1 inch is equal to 2.54 cm.
2. Set up a proportion:
1 inch / 2.54 cm = x inches / 12 cm
3. Cross multiply and solve for x:
2.54 * x = 1 * 12
x = 12 / 2.54
x ≈ 4.72 inches
Therefore, 12 cm is approximately equal to 4.72 inches.
Real-life example:
If you have a ruler that measures in centimeters and you want to know how many inches a 12 cm length is, you can use the conversion factor to find out that it is approximately 4.72 inches long.
FAQs:
1. Why do we need to convert units?
Converting units allows us to easily compare and work with measurements in different systems. It helps in making calculations and understanding measurements in a more familiar unit.
2. Can I convert units without knowing the conversion factor?
It is possible to convert units without knowing the exact conversion factor, but it is always helpful to have the conversion factor to ensure accuracy in the conversion.
3. Is there a simple way to remember common conversion factors?
One way to remember common conversion factors is to create mnemonic devices or use conversion charts for quick reference. Practice and repetition also help in memorizing common conversion factors.