396 mm to inches
Understand the Problem
The question is asking for the conversion of a measurement from millimeters to inches. To solve it, we will use the conversion factor where 1 inch equals 25.4 millimeters.
Answer
$$ \text{Inches} \approx 3.94 $$
Answer for screen readers
$$ \text{Inches} \approx 3.94 $$
Steps to Solve
- Identify the conversion factor
To convert from millimeters to inches, we will use the conversion factor:
$$ 1 \text{ inch} = 25.4 \text{ millimeters} $$
- Set up the conversion equation
To find the number of inches from a given millimeter value (let's call it $x$ mm), we will explore the relationship using the conversion factor. The formula for conversion will be:
$$ \text{inches} = \frac{x \text{ mm}}{25.4 \text{ mm/inch}} $$
- Perform the calculation
Substitute the value of $x$ (the measurement in millimeters) into our equation to find the measurement in inches.
For example, if $x = 100$ mm, the equation is:
$$ \text{inches} = \frac{100 \text{ mm}}{25.4 \text{ mm/inch}} $$
- Calculate the result
Using a calculator for the division:
$$ \text{inches} \approx \frac{100}{25.4} \approx 3.937 $$
- Round or format the answer accordingly
Depending on the requirements, you may need to round your answer to a certain number of decimal places. Here, let’s round to two decimal places. So, the result will be:
$$ \text{inches} \approx 3.94 $$
$$ \text{Inches} \approx 3.94 $$
More Information
This result shows how you can convert measurements from millimeters to inches using the relationship where 1 inch equals 25.4 millimeters. This conversion is commonly used in various fields such as engineering, carpentry, and everyday measurements.
Tips
- Forgetting to use the conversion factor correctly can lead to errors.
- Mixing up which value goes in the numerator and which goes in the denominator.
- Not rounding the final answer as required, leading to imprecise results.