To convert 4 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 / 4 cm
3. Cross multiply and solve for x:
2.54 * x = 1 * 4
x = 4 / 2.54
x ≈ 1.57 inches
Therefore, 4 cm is approximately equal to 1.57 inches.
Real-life example:
Let’s say you have a pencil that is 4 cm long and you want to know how long it is in inches. By using the conversion factor of 1 inch = 2.54 cm, you can calculate that the pencil is approximately 1.57 inches long.
FAQs:
1. Why do we need to convert units?
Converting units allows us to easily compare measurements and work with different systems of measurement.
2. Can I convert units without using a conversion factor?
It is recommended to use a conversion factor to ensure accurate and precise conversions.
3. Is there a quick way to convert units without using a formula?
You can use online unit conversion calculators or mobile apps to quickly convert units without having to manually calculate them.