Convert 138 mm to cm.
Understand the Problem
The question is asking to convert 138 millimeters into centimeters. To solve this, we need to know that there are 10 millimeters in a centimeter and perform the appropriate division.
Answer
$13.8 \, \text{cm}$
Answer for screen readers
The answer is $13.8 , \text{cm}$.
Steps to Solve
- Identify the conversion factor
We know that 1 centimeter (cm) is equal to 10 millimeters (mm).
- Set up the division
To convert millimeters to centimeters, we will divide the number of millimeters by the conversion factor (10).
- Perform the calculation
We will divide the given measurement (138 mm) by 10:
$$ 138 , \text{mm} \div 10 = 13.8 , \text{cm} $$
The answer is $13.8 , \text{cm}$.
More Information
This conversion is useful in various fields such as engineering, construction, and everyday measurements. Understanding the relationship between millimeters and centimeters can streamline tasks that require precise measurements.
Tips
- A common mistake is multiplying instead of dividing. Remember, since we're converting from a smaller unit (mm) to a larger unit (cm), division is necessary.
