To convert 4 cm to mm, you need to know that 1 cm is equal to 10 mm.
Here are the step by step instructions on how to convert cm to mm:
1. Identify the conversion factor: 1 cm = 10 mm
2. Multiply the value in cm by the conversion factor to get the equivalent value in mm.
Calculation:
4 cm x 10 mm/cm = 40 mm
Therefore, 4 cm is equal to 40 mm.
Real-life example:
If you have a pencil that is 4 cm long, you can convert this length to mm by multiplying 4 cm by 10 mm/cm. This will give you the length of the pencil in mm, which is 40 mm.
FAQs:
1. Why do we need to convert units?
Converting units allows us to easily compare and work with different measurements. It helps in standardizing measurements and making calculations more accurate.
2. Can I convert units using a calculator?
Yes, you can use a calculator to convert units by multiplying the value in one unit by the conversion factor to get the equivalent value in another unit.
3. Is there a shortcut to convert units?
One shortcut to convert units is to remember common conversion factors, such as 1 cm = 10 mm, 1 m = 100 cm, etc. This can help you quickly convert units without having to look up the conversion factor each time.